Formula Atlantic Spring Rate Data

14
v2 Front Tyre: Atlantic Camber 1 0.0 ° Pressure 1 26 psi Pressure 24 psi Size: 240/600R15 Camber 2 0.5 ° Pressure 2 24 psi Speed 1 0 kph Rim: 10J x 15 Camber 3 1.0 ° Pressure 3 22 psi Speed 2 50 kph Project RC545STB Camber 4 1.5 ° Pressure 4 20 psi Speed 3 80 kph Tested 9/19/2006 Camber 5 2.0 ° Speed 4 100 kph Spec 13083 Camber 6 2.5 ° Speed 5 140 kph OD (New) 598mm / 23.54" Camber 7 3.0 ° Speed 6 170 kph Camber 8 3.5 ° Rear Tyre: Atlantic Camber 1 0.0 ° Pressure 1 26 psi Pressure 1 22 psi Size: 330/620R15 Camber 2 0.5 ° Pressure 2 24 psi Speed 1 0 kph Rim: 14J x 15 Camber 3 1.0 ° Pressure 3 22 psi Speed 2 50 kph Project RC545STB Camber 4 1.5 ° Pressure 4 20 psi Speed 3 80 kph Tested 9/21/2006 Camber 5 2.0 ° Speed 4 100 kph Spec 13090 Camber 6 2.5 ° Speed 5 140 kph OD (New) 619mm / 24.37" Camber 7 3.0 ° Speed 6 170 kph Camber 8 3.5 ° CONFIDENTIAL, PROPRIETARY AND / OR TRADE SECRET INFORMATION. The information contained in this document is intended only for the use of the individual to whom it was sent and may contain confidential, proprietary and / or trade secret information that is the property of Cooper Tire and Rubber Company and / or Cooper-Avon Tyres Limited. If the reader of this document is not the intended recipient, you are hereby notified that you should not read any further, and any dissemination, distribution or copying of this communication is strictly prohibited. Copyright © Unpublished. Static Radius Static Radius Rolling Radius Rolling Radius

Transcript of Formula Atlantic Spring Rate Data

Page 1: Formula Atlantic Spring Rate Data

v2

Front

Tyre: Atlantic Camber 1 0.0 ° Pressure 1 26 psi Pressure 24 psi

Size: 240/600R15 Camber 2 0.5 ° Pressure 2 24 psi Speed 1 0 kph

Rim: 10J x 15 Camber 3 1.0 ° Pressure 3 22 psi Speed 2 50 kph

Project RC545STB Camber 4 1.5 ° Pressure 4 20 psi Speed 3 80 kph

Tested 9/19/2006 Camber 5 2.0 ° Speed 4 100 kph

Spec 13083 Camber 6 2.5 ° Speed 5 140 kph

OD (New) 598mm / 23.54" Camber 7 3.0 ° Speed 6 170 kph

Camber 8 3.5 °

Rear

Tyre: Atlantic Camber 1 0.0 ° Pressure 1 26 psi Pressure 1 22 psi

Size: 330/620R15 Camber 2 0.5 ° Pressure 2 24 psi Speed 1 0 kph

Rim: 14J x 15 Camber 3 1.0 ° Pressure 3 22 psi Speed 2 50 kph

Project RC545STB Camber 4 1.5 ° Pressure 4 20 psi Speed 3 80 kph

Tested 9/21/2006 Camber 5 2.0 ° Speed 4 100 kph

Spec 13090 Camber 6 2.5 ° Speed 5 140 kph

OD (New) 619mm / 24.37" Camber 7 3.0 ° Speed 6 170 kph

Camber 8 3.5 °

CONFIDENTIAL, PROPRIETARY AND / OR TRADE SECRET INFORMATION.

The information contained in this document is intended only for the use of the individual to whom it was sent and may contain confidential,

proprietary and / or trade secret information that is the property of Cooper Tire and Rubber Company and / or Cooper-Avon Tyres Limited. If the

reader of this document is not the intended recipient, you are hereby notified that you should not read any further, and any dissemination,

distribution or copying of this communication is strictly prohibited. Copyright © Unpublished.

Static Radius

Static Radius

Rolling Radius

Rolling Radius

Page 2: Formula Atlantic Spring Rate Data

Simple Spring Rate Summary

0° 0.5° 1.0° 1.5° 2.0° 2.5° 3.0° 3.5° 0° 0.5° 1.0° 1.5° 2.0° 2.5° 3.0° 3.5°

26 psi 31.7 31.8 31.8 31.1 30.8 30.5 30.9 30.5 26 psi 1774 1781 1780 1744 1725 1708 1733 1707

24 psi 31.4 30.2 30.3 29.9 29.5 29.1 28.3 27.9 24 psi 1761 1693 1696 1676 1654 1627 1586 1561

22 psi 29.1 29.5 28.8 28.6 28.2 27.7 27.3 26.7 22 psi 1628 1653 1614 1601 1577 1549 1529 1495

20 psi 27.0 27.2 26.7 26.5 26.0 25.9 25.5 25.1 20 psi 1514 1525 1495 1486 1459 1451 1429 1406

0° 0.5° 1.0° 1.5° 2.0° 2.5° 3.0° 3.5° 0° 0.5° 1.0° 1.5° 2.0° 2.5° 3.0° 3.5°

0 kph 28.1 27.9 27.7 27.3 26.7 26.4 25.5 25.0 0 MPH 1571 1562 1553 1530 1495 1481 1430 1398

50 kph 29.9 29.3 28.7 28.2 27.6 26.7 26.3 25.5 31 MPH 1675 1640 1607 1580 1543 1497 1471 1425

80 kph 28.0 27.7 27.4 27.3 26.3 26.1 25.5 24.7 50 MPH 1567 1553 1535 1527 1475 1460 1429 1385

100 kph 28.0 27.8 27.4 27.0 26.4 26.0 25.5 25.0 62 MPH 1568 1555 1533 1513 1481 1456 1429 1398

140 kph 28.5 28.4 27.9 27.7 27.0 26.5 25.7 25.4 87 MPH 1598 1589 1563 1549 1511 1484 1440 1420

170 kph 27.8 27.7 27.6 27.0 26.4 25.9 25.4 24.7 106 MPH 1557 1553 1547 1513 1480 1452 1425 1381

0° 0.5° 1.0° 1.5° 2.0° 2.5° 3.0° 3.5° 0° 0.5° 1.0° 1.5° 2.0° 2.5° 3.0° 3.5°

26 psi 38.7 39.0 38.3 37.5 36.0 34.9 33.2 31.6 26 psi 2167 2185 2146 2099 2017 1955 1860 1771

24 psi 36.9 36.7 36.0 35.1 34.3 33.2 31.5 30.0 24 psi 2069 2058 2014 1967 1922 1860 1763 1678

22 psi 35.2 35.1 34.6 33.7 32.3 31.4 30.1 29.0 22 psi 1971 1963 1938 1889 1810 1757 1686 1622

20 psi 33.3 32.6 32.1 31.5 30.8 29.6 28.6 27.5 20 psi 1867 1827 1797 1764 1723 1660 1601 1542

0° 0.5° 1.0° 1.5° 2.0° 2.5° 3.0° 3.5° 0° 0.5° 1.0° 1.5° 2.0° 2.5° 3.0° 3.5°

0 kph 30.6 30.0 29.7 29.1 28.2 27.2 26.0 25.1 0 MPH 1712 1678 1662 1630 1578 1526 1459 1408

50 kph 33.4 32.4 31.5 30.2 28.0 27.9 26.7 25.3 31 MPH 1869 1817 1762 1694 1571 1562 1494 1420

80 kph 31.8 31.7 30.8 29.7 28.8 27.6 26.4 25.3 50 MPH 1782 1774 1725 1665 1612 1547 1476 1415

100 kph 32.3 31.5 30.6 29.7 28.6 27.5 26.2 25.0 62 MPH 1807 1767 1712 1663 1602 1538 1467 1401

140 kph 32.0 31.2 30.7 29.7 28.6 27.6 26.2 25.1 87 MPH 1791 1745 1718 1665 1604 1546 1468 1407

170 kph 31.6 31.3 30.6 29.5 28.2 27.0 25.8 24.8 106 MPH 1771 1753 1716 1650 1577 1514 1444 1387

Atlantic Rear 13090

kg mm-1

kg mm-1

CONFIDENTIAL, PROPRIETARY AND / OR TRADE SECRET INFORMATION.

The information contained in this document is intended only for the use of the individual to whom it was sent and may

contain confidential, proprietary and / or trade secret information that is the property of Cooper Tire and Rubber Company

and / or Cooper-Avon Tyres Limited. If the reader of this document is not the intended recipient, you are hereby notified

that you should not read any further, and any dissemination, distribution or copying of this communication is strictly

prohibited. Copyright © Unpublished.

Readings taken from a flat plate

lbs in-1

Readings taken from drum 1/300 mile circumference at 24 psi

lbs in-1

lbs in-1

lbs in-1

kg mm-1

Readings taken from a flat plate

Readings taken from drum 1/300 mile circumference at 24 psi

Atlantic Front 13083

240/600R15

Unloaded dia on 10J x 15 rim:- 598 mm / 23.54"

330/620R15

Unloaded dia on 14J x 15 rim:- 619 mm / 24.37"

kg mm-1

Page 3: Formula Atlantic Spring Rate Data

Atlantic Front 13083240/600R15

Unloaded dia on 10J x 15 rim:- 598 mm

Readings taken from a flat plate

Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure

0° 26 psi 0.5° 26 psi 1° 26 psi 1.5° 26 psi 2° 26 psi 2.5° 26 psi 3° 26 psi 3.5° 26 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

-2 299.0 0.0 -1 299.0 0.0 -1 299.0 0.0 -1 299.0 0.0 -1 299.0 0.0 -1 299.5 0.0 0 300.0 0.0 0 300.4 0.0

33 297.6 1.4 33 297.3 1.7 32 297.4 1.6 34 297.5 1.5 33 297.5 1.5 33 298.2 1.3 32 298.8 1.2 33 299.0 1.4

57 296.7 2.3 56 296.8 2.2 57 296.3 2.7 57 296.5 2.5 56 296.5 2.5 57 297.0 2.5 58 297.8 2.2 57 298.1 2.3

84 295.8 3.2 84 295.5 3.5 84 295.6 3.4 84 295.5 3.5 84 295.5 3.5 84 295.9 3.5 83 296.5 3.4 83 296.8 3.5

113 295.3 3.7 112 294.8 4.2 113 294.7 4.3 114 294.6 4.4 112 295.0 4.0 113 295.2 4.3 113 295.7 4.3 113 295.8 4.6

141 293.8 5.2 141 293.8 5.2 141 293.8 5.2 140 293.7 5.3 141 293.9 5.1 141 294.0 5.4 141 294.9 5.0 140 294.9 5.5

165 293.2 5.8 167 293.2 5.8 167 293.2 5.8 166 293.1 5.9 167 293.1 5.9 168 293.3 6.2 168 293.9 6.1 167 293.9 6.5

181 292.6 6.4 180 292.7 6.3 181 292.7 6.3 180 292.4 6.6 180 292.6 6.4 181 292.6 6.9 181 293.3 6.7 180 293.4 7.0

206 292.0 7.0 207 291.9 7.1 207 291.9 7.1 207 291.9 7.1 205 291.7 7.3 208 291.9 7.6 206 292.5 7.5 207 292.4 8.0

232 291.3 7.7 232 291.1 7.9 232 290.7 8.3 233 290.9 8.1 231 290.8 8.2 233 291.1 8.4 232 291.7 8.3 232 292.1 8.3

258 290.6 8.4 259 290.3 8.7 260 290.3 8.7 260 290.2 8.8 258 290.3 8.7 259 290.2 9.2 259 291.0 9.0 259 291.0 9.4

276 289.7 9.3 277 289.6 9.4 278 289.5 9.5 280 289.3 9.7 278 289.2 9.8 278 289.4 10.1 278 290.2 9.7 279 290.2 10.2

303 289.1 9.9 303 288.9 10.1 304 288.9 10.1 304 288.7 10.3 305 288.5 10.5 302 288.8 10.6 305 289.3 10.7 304 289.3 11.1

328 288.4 10.6 331 288.3 10.7 329 288.2 10.8 328 287.9 11.1 329 287.9 11.1 327 288.1 11.4 330 288.5 11.4 330 288.4 11.9

354 287.5 11.5 354 287.7 11.3 354 287.4 11.6 356 287.4 11.6 356 286.9 12.1 354 287.2 12.3 355 288.1 11.8 356 287.8 12.5

375 286.8 12.2 373 286.8 12.2 373 286.6 12.4 375 286.5 12.5 373 286.3 12.7 374 286.5 13.0 374 287.2 12.8 376 287.1 13.2

399 286.0 13.0 398 285.8 13.2 399 285.6 13.4 400 285.6 13.4 399 285.3 13.7 399 285.6 13.9 399 286.4 13.5 399 286.4 13.9

424 285.3 13.7 425 285.2 13.8 424 285.1 13.9 424 285.0 14.0 425 284.8 14.2 424 285.0 14.5 424 285.5 14.4 424 285.5 14.9

449 284.9 14.1 450 284.8 14.2 448 284.6 14.4 449 284.2 14.8 450 284.5 14.5 449 284.4 15.1 449 285.1 14.9 449 285.0 15.4

466 284.1 14.9 465 283.7 15.3 465 283.7 15.3 464 283.4 15.6 465 283.2 15.8 466 283.5 16.0 465 284.5 15.4 465 284.4 16.0

491 283.1 15.9 490 283.0 16.0 490 282.8 16.2 491 282.6 16.4 491 282.6 16.4 490 282.9 16.6 491 283.5 16.5 489 283.4 17.0

515 282.3 16.7 514 282.1 16.9 515 282.2 16.8 515 281.8 17.2 516 281.8 17.2 516 282.1 17.4 516 282.7 17.3 517 282.6 17.8

537 281.5 17.5 538 281.6 17.4 540 281.4 17.6 539 281.2 17.8 538 281.0 18.0 538 281.4 18.1 540 281.9 18.1 539 282.0 18.4

568 280.7 18.3 569 280.4 18.6 568 280.7 18.3 569 280.1 18.9 569 279.8 19.2 568 279.9 19.6 569 281.3 18.7 569 281.3 19.1

592 279.7 19.3 593 279.8 19.2 592 279.8 19.2 591 279.4 19.6 593 279.3 19.7 593 279.6 19.9 594 280.6 19.4 592 280.5 19.9

617 278.9 20.1 619 278.9 20.1 617 278.9 20.1 618 278.5 20.5 617 278.5 20.5 618 278.7 20.8 618 279.5 20.4 617 279.6 20.8

642 278.5 20.5 642 278.4 20.6 641 278.2 20.8 641 278.1 20.9 641 277.9 21.1 641 278.2 21.3 641 279.0 21.0 643 279.1 21.3

kg mm-1

31.7 kg mm-1

31.8 kg mm-1

31.8 kg mm-1

31.1 kg mm-1

30.8 kg mm-1

30.5 kg mm-1

30.9 kg mm-1

30.5

Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure

0° 24 psi 0.5° 24 psi 1° 24 psi 1.5° 24 psi 2° 24 psi 2.5° 24 psi 3° 24 psi 3.5° 24 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

0 299.0 0.0 -1 299.0 0.0 -2 299.0 0.0 -1 299.0 0.0 -1 299.0 0.0 0 299.5 0.0 -1 299.6 0.0 -2 299.8 0.0

32 297.8 1.2 33 297.3 1.7 33 297.5 1.5 34 297.6 1.4 34 297.5 1.5 34 298.2 1.3 34 298.3 1.3 35 298.5 1.3

58 296.9 2.1 55 296.2 2.8 58 296.6 2.4 59 296.4 2.6 57 296.4 2.6 58 297.0 2.5 58 296.9 2.7 55 297.4 2.4

83 296.3 2.7 84 295.4 3.6 85 295.8 3.2 85 295.6 3.4 83 295.5 3.5 85 295.8 3.7 84 296.0 3.6 83 296.1 3.7

113 295.2 3.8 114 294.2 4.8 113 294.9 4.1 111 294.4 4.6 114 294.6 4.4 114 295.1 4.4 113 295.0 4.7 114 295.1 4.8

140 294.2 4.8 139 293.4 5.6 140 293.7 5.3 142 293.5 5.5 142 293.4 5.6 140 293.9 5.6 142 294.2 5.4 141 294.0 5.8

166 293.3 5.7 167 292.8 6.2 167 293.0 6.0 168 292.8 6.2 168 292.5 6.5 167 293.1 6.4 165 292.8 6.8 167 293.1 6.7

181 292.7 6.3 180 292.3 6.7 181 292.4 6.6 181 292.1 6.9 179 292.2 6.8 181 292.4 7.1 181 292.2 7.4 181 292.3 7.5

205 292.3 6.7 208 291.4 7.6 205 291.7 7.3 206 291.4 7.6 207 291.3 7.7 205 291.7 7.8 206 291.5 8.1 205 291.7 8.2

231 291.2 7.8 232 290.5 8.5 232 290.7 8.3 233 290.3 8.7 232 290.2 8.8 234 290.6 8.9 231 290.4 9.2 233 290.5 9.3

260 290.5 8.5 259 289.7 9.3 259 290.1 8.9 258 289.7 9.3 259 289.6 9.4 259 290.0 9.5 259 289.8 9.9 256 290.0 9.8

277 289.8 9.2 277 289.1 9.9 278 289.2 9.8 280 288.9 10.1 279 288.9 10.1 279 289.0 10.5 278 288.7 10.9 278 288.8 11.0

303 289.1 9.9 304 288.4 10.6 303 288.6 10.4 302 288.1 10.9 304 288.1 10.9 305 288.7 10.9 304 288.2 11.4 304 288.2 11.6

330 288.4 10.6 328 287.3 11.7 329 287.7 11.3 328 287.4 11.6 329 287.2 11.8 330 287.5 12.0 329 287.4 12.3 329 287.2 12.6

356 287.9 11.1 355 286.7 12.3 356 286.7 12.3 354 286.9 12.1 355 286.4 12.6 356 286.8 12.8 354 286.4 13.2 356 286.4 13.4

376 286.8 12.2 374 285.8 13.2 373 286.1 12.9 374 285.9 13.1 376 285.6 13.4 374 285.8 13.7 375 285.4 14.2 375 285.4 14.4

400 286.0 13.0 400 285.1 13.9 400 285.3 13.7 398 285.2 13.8 399 284.9 14.1 399 285.0 14.6 398 285.1 14.5 399 284.5 15.3

425 285.2 13.8 426 284.4 14.6 425 284.6 14.4 424 284.3 14.7 424 284.1 14.9 424 284.1 15.4 423 283.9 15.8 424 283.9 15.9

450 284.9 14.1 449 283.7 15.3 449 284.0 15.0 449 283.5 15.5 448 283.1 15.9 449 283.5 16.0 449 283.2 16.5 449 283.1 16.8

467 283.8 15.2 465 282.8 16.2 464 283.1 15.9 466 282.8 16.2 467 282.4 16.6 464 282.7 16.8 465 282.4 17.3 466 282.5 17.3

491 283.1 15.9 490 282.0 17.0 489 282.4 16.6 489 282.1 16.9 490 281.7 17.3 490 281.9 17.7 490 281.7 17.9 491 281.6 18.3

516 282.3 16.7 516 281.4 17.6 516 281.4 17.6 516 281.2 17.8 514 281.0 18.0 516 281.3 18.2 517 281.0 18.7 516 280.9 18.9

539 281.6 17.4 539 280.2 18.8 540 280.5 18.5 540 280.2 18.8 538 280.0 19.0 541 280.3 19.2 538 279.8 19.9 538 279.6 20.2

568 280.7 18.3 569 279.4 19.6 567 280.0 19.0 567 279.4 19.6 568 279.3 19.7 569 279.4 20.1 569 279.0 20.6 567 278.9 20.9

590 279.9 19.1 592 278.5 20.5 591 278.8 20.2 593 278.6 20.4 592 278.3 20.7 594 278.6 20.9 593 278.2 21.4 593 278.1 21.8

618 279.2 19.8 617 278.0 21.0 619 278.2 20.8 618 277.8 21.2 616 277.8 21.2 618 278.0 21.5 615 277.5 22.1 617 277.5 22.4

643 278.5 20.5 641 277.4 21.6 642 277.7 21.3 641 277.4 21.6 641 277.0 22.0 641 277.3 22.2 641 276.8 22.8 640 276.7 23.2

kg mm-1

31.4 kg mm-1

30.2 kg mm-1

30.3 kg mm-1

29.9 kg mm-1

29.5 kg mm-1

29.1 kg mm-1

28.3 kg mm-1

27.9

Page 4: Formula Atlantic Spring Rate Data

Atlantic Front 13083240/600R15

Unloaded dia on 10J x 15 rim:- 598 mm

Readings taken from a flat plate

Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure

0° 22 psi 0.5° 22 psi 1° 22 psi 1.5° 22 psi 2° 22 psi 2.5° 22 psi 3° 22 psi 3.5° 22 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

-1 299.0 0.0 0 299.0 0.0 -1 299.0 0.0 1 299.0 0.0 1 299.0 0.0 -2 299.6 0.0 -1 299.5 0.0 0 300.1 0.0

35 297.6 1.4 32 297.6 1.4 34 297.5 1.5 33 297.2 1.8 34 297.3 1.7 34 298.1 1.5 33 298.0 1.4 34 298.7 1.5

57 296.9 2.1 56 296.6 2.4 57 296.5 2.5 58 296.2 2.8 57 296.3 2.7 58 296.8 2.8 56 296.9 2.6 57 297.2 2.9

85 295.8 3.2 83 295.6 3.4 85 295.6 3.4 84 295.4 3.6 86 295.4 3.6 84 296.0 3.6 83 295.9 3.6 82 296.0 4.1

115 294.9 4.1 113 294.4 4.6 114 294.6 4.4 115 294.2 4.8 114 294.4 4.6 111 294.7 4.9 113 294.6 4.8 114 295.1 5.0

141 293.8 5.2 140 293.6 5.4 139 293.5 5.5 141 293.3 5.7 140 293.2 5.8 141 293.7 5.9 141 293.9 5.5 142 293.8 6.3

168 292.9 6.1 166 292.9 6.1 167 292.5 6.5 167 292.5 6.5 168 292.5 6.5 167 292.7 6.9 166 292.7 6.7 166 292.8 7.3

180 292.4 6.6 181 292.4 6.6 181 292.2 6.8 180 292.0 7.0 181 291.8 7.2 180 292.3 7.3 180 292.0 7.4 179 292.3 7.9

208 291.6 7.4 206 291.3 7.7 207 291.3 7.7 207 291.1 7.9 207 291.0 8.0 206 291.3 8.3 204 291.1 8.3 206 291.3 8.8

231 290.7 8.3 232 290.7 8.3 231 290.5 8.5 232 290.1 8.9 232 289.9 9.1 233 290.4 9.2 232 290.6 8.9 233 290.1 10.0

259 289.9 9.1 259 289.7 9.3 261 289.5 9.5 260 289.2 9.8 258 289.2 9.8 259 289.4 10.2 259 289.2 10.2 259 289.3 10.8

279 289.2 9.8 277 289.1 9.9 279 288.8 10.2 279 288.5 10.5 279 288.3 10.7 278 288.8 10.8 277 288.7 10.7 279 288.5 11.6

303 288.4 10.6 303 288.3 10.7 303 288.1 10.9 305 287.7 11.3 304 287.7 11.3 303 287.8 11.8 304 287.7 11.7 304 287.7 12.4

328 287.1 11.9 328 287.3 11.7 329 287.0 12.0 330 286.8 12.2 327 286.6 12.4 330 286.9 12.7 328 286.6 12.9 329 286.7 13.4

357 286.6 12.4 355 286.5 12.5 355 286.4 12.6 355 286.0 13.0 356 285.7 13.3 355 286.1 13.5 355 285.7 13.7 354 285.5 14.6

375 285.6 13.4 374 285.9 13.1 376 285.5 13.5 372 285.1 13.9 374 284.9 14.1 376 285.2 14.4 374 285.1 14.4 374 284.9 15.2

399 285.1 13.9 399 285.0 14.0 399 284.8 14.2 399 284.2 14.8 400 284.1 14.9 399 284.4 15.2 397 284.1 15.3 399 284.0 16.1

426 283.8 15.2 425 284.0 15.0 426 283.5 15.5 425 283.6 15.4 425 283.4 15.6 425 283.6 16.0 424 283.3 16.2 425 283.2 16.9

450 283.4 15.6 449 283.4 15.6 448 282.9 16.1 449 282.6 16.4 451 282.5 16.5 448 282.8 16.8 449 282.4 17.0 449 282.6 17.5

467 282.6 16.4 465 282.7 16.3 465 282.3 16.7 465 282.0 17.0 465 281.9 17.1 467 282.1 17.5 465 281.7 17.7 464 281.8 18.3

489 281.9 17.1 492 282.0 17.0 492 281.5 17.5 490 281.6 17.4 490 281.0 18.0 491 281.3 18.3 489 281.0 18.4 491 281.0 19.1

515 281.1 17.9 514 281.1 17.9 515 280.6 18.4 516 280.3 18.7 514 279.9 19.1 515 280.2 19.4 516 280.0 19.5 515 279.9 20.2

539 280.1 18.9 538 280.0 19.0 539 279.6 19.4 539 279.2 19.8 538 279.1 19.9 539 279.4 20.2 538 278.8 20.6 539 279.0 21.1

569 279.1 19.9 568 279.0 20.0 569 278.7 20.3 567 278.4 20.6 569 278.2 20.8 570 278.2 21.4 569 278.3 21.2 568 278.1 22.0

594 278.5 20.5 593 278.4 20.6 591 278.1 20.9 593 277.9 21.1 592 277.6 21.4 592 277.7 21.9 593 277.7 21.7 593 277.4 22.7

618 277.6 21.4 618 277.6 21.4 616 277.6 21.4 619 276.8 22.2 620 276.5 22.5 618 276.7 22.8 619 276.5 22.9 618 276.3 23.8

643 276.9 22.1 642 277.1 21.9 641 276.5 22.5 640 276.3 22.7 639 276.1 22.9 641 276.2 23.4 641 275.7 23.7 642 275.8 24.3

kg mm-1

29.1 kg mm-1

29.5 kg mm-1

28.8 kg mm-1

28.6 kg mm-1

28.2 kg mm-1

27.7 kg mm-1

27.3 kg mm-1

26.7

Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure

0° 20 psi 0.5° 20 psi 1° 20 psi 1.5° 20 psi 2° 20 psi 2.5° 20 psi 3° 20 psi 3.5° 20 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

-1 298.6 0.4 1 298.6 0.4 1 298.6 0.4 -1 298.5 0.5 0 298.8 0.2 -1 299.2 0.4 -2 299.3 0.1 -2 299.4 0.7

34 297.2 1.8 34 296.6 2.4 34 296.8 2.2 35 296.6 2.4 32 297.1 1.9 32 297.5 2.1 32 297.6 1.9 33 297.9 2.2

56 295.8 3.2 56 295.9 3.1 57 295.8 3.2 56 295.6 3.4 57 295.9 3.1 57 296.2 3.4 57 296.4 3.1 57 296.7 3.4

84 294.9 4.1 82 294.9 4.1 83 294.7 4.3 84 294.5 4.5 84 294.9 4.1 82 295.4 4.2 82 295.4 4.1 83 295.4 4.7

112 293.9 5.1 113 294.0 5.0 112 293.7 5.3 113 293.6 5.4 114 293.7 5.3 113 294.0 5.6 112 294.1 5.4 113 294.2 5.9

142 292.9 6.1 140 292.9 6.1 140 292.4 6.6 141 292.6 6.4 141 292.6 6.4 141 292.9 6.7 141 293.1 6.4 141 293.0 7.1

165 292.2 6.8 166 292.3 6.7 166 292.1 6.9 167 291.9 7.1 166 292.0 7.0 168 292.2 7.4 167 292.2 7.3 166 292.1 8.0

179 291.4 7.6 180 291.3 7.7 181 291.2 7.8 181 291.1 7.9 180 291.2 7.8 181 291.2 8.4 180 291.4 8.0 180 291.4 8.7

207 290.5 8.5 206 290.6 8.4 207 290.3 8.7 205 290.2 8.8 207 290.1 8.9 207 290.9 8.7 207 290.3 9.1 206 290.2 9.9

232 289.5 9.5 233 289.5 9.5 233 289.1 9.9 233 289.0 10.0 232 289.0 10.0 233 289.3 10.3 230 289.2 10.3 232 289.0 11.1

261 288.9 10.1 260 288.9 10.1 258 288.7 10.3 260 288.4 10.6 259 288.4 10.6 259 288.8 10.8 260 288.5 11.0 259 288.4 11.7

277 287.9 11.1 279 288.1 10.9 277 287.5 11.5 277 287.4 11.6 277 287.8 11.2 277 287.8 11.8 278 287.5 12.0 280 287.5 12.7

304 287.0 12.0 304 286.9 12.1 305 286.6 12.4 305 286.3 12.7 304 286.4 12.6 304 286.6 13.0 305 286.5 13.0 303 286.3 13.8

330 285.8 13.2 328 285.9 13.1 329 285.5 13.5 329 285.4 13.6 331 285.4 13.6 331 285.7 13.9 329 285.5 13.9 328 285.3 14.9

355 285.3 13.7 354 285.3 13.7 355 284.9 14.1 353 284.8 14.2 354 284.7 14.3 355 285.0 14.6 354 284.8 14.7 353 284.6 15.5

375 284.3 14.7 376 284.3 14.7 373 283.8 15.2 373 283.6 15.4 374 283.6 15.4 374 283.6 16.0 373 283.5 15.9 374 283.4 16.7

399 283.1 15.9 400 283.3 15.7 400 282.9 16.1 398 282.6 16.4 400 282.7 16.3 398 283.0 16.6 399 282.7 16.7 399 282.6 17.5

424 282.0 17.0 423 282.3 16.7 424 282.1 16.9 426 281.9 17.1 425 282.0 17.0 424 282.1 17.5 424 281.8 17.6 425 281.4 18.7

448 281.7 17.3 451 281.8 17.2 449 281.4 17.6 451 281.3 17.7 448 281.1 17.9 448 281.3 18.3 449 281.3 18.1 448 281.0 19.1

467 280.8 18.2 464 280.9 18.1 465 280.4 18.6 466 280.3 18.7 466 280.1 18.9 467 280.5 19.1 465 280.1 19.4 465 280.1 20.0

489 280.2 18.8 490 280.2 18.8 490 279.6 19.4 490 279.2 19.8 490 279.2 19.8 489 279.5 20.1 491 279.5 20.0 490 279.1 21.0

516 278.9 20.1 516 279.0 20.0 514 278.6 20.4 517 278.3 20.7 515 278.3 20.7 516 278.6 21.0 515 278.3 21.1 515 278.2 21.9

538 278.1 20.9 538 278.2 20.8 538 277.8 21.2 539 277.6 21.4 540 277.4 21.6 540 277.4 22.2 539 277.3 22.2 538 277.4 22.7

567 277.1 21.9 568 277.0 22.0 569 276.7 22.3 567 276.7 22.3 569 276.3 22.7 568 276.5 23.0 570 276.3 23.2 568 276.3 23.9

592 276.1 22.9 592 276.2 22.8 592 275.8 23.2 593 275.3 23.7 594 275.4 23.6 593 275.7 23.9 594 275.4 24.0 592 275.2 24.9

618 275.8 23.2 619 275.9 23.1 618 275.1 23.9 617 274.8 24.2 617 274.7 24.3 618 275.1 24.5 618 274.8 24.7 616 274.6 25.5

641 274.8 24.2 640 275.0 24.0 641 274.5 24.5 640 274.3 24.7 641 274.1 24.9 641 274.4 25.2 642 274.1 25.4 641 273.9 26.3

kg mm-1

27.0 kg mm-1

27.2 kg mm-1

26.7 kg mm-1

26.5 kg mm-1

26.0 kg mm-1

25.9 kg mm-1

25.5 kg mm-1

25.1

1 kg/mm = 55.9 lb/in

CONFIDENTIAL, PROPRIETARY AND / OR TRADE SECRET INFORMATION.

The information contained in this document is intended only for the use of the individual to whom it was sent and may contain confidential, proprietary and / or trade secret information that is the property of Cooper Tire and Rubber Company and / or Cooper-Avon Tyres Limited. If the reader of this document is not the intended

recipient, you are hereby notified that you should not read any further, and any dissemination, distribution or copying of this communication is strictly prohibited. Copyright © Unpublished.

Page 5: Formula Atlantic Spring Rate Data

Atlantic Front 13083240/600R15

Unloaded dia on 10J x 15 rim:- 598 mm

Readings taken from drum 1/300 mile circumference

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 0 kph 24 psi 0.5° 0 kph 24 psi 1° 0 kph 24 psi 1.5° 0 kph 24 psi 2° 0 kph 24 psi 2.5° 0 kph 24 psi 3° 0 kph 24 psi 3.5° 0 kph 24 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

0 299.0 0.0 -1 299.0 0.0 0 299.0 0.0 0 299.0 0.0 -1 299.0 0.0 0 299.9 0.0 0 300.1 0.0 -1 300.4 0.0

34 298.0 1.0 32 297.9 1.1 33 297.8 1.2 34 297.7 1.3 33 297.5 1.5 33 298.1 1.8 34 298.3 1.7 35 298.6 1.8

57 296.4 2.6 57 296.4 2.6 58 296.4 2.6 57 296.3 2.7 58 296.4 2.6 57 297.2 2.6 59 297.2 2.8 57 297.6 2.8

86 295.3 3.7 85 295.2 3.8 82 295.6 3.4 83 295.1 3.9 85 295.3 3.7 84 295.8 4.1 84 296.0 4.0 84 296.4 4.1

111 294.4 4.6 113 294.4 4.6 111 294.5 4.5 113 294.2 4.8 113 294.0 5.0 113 294.7 5.1 113 294.7 5.4 113 294.8 5.6

140 293.1 5.9 142 293.1 5.9 140 293.1 5.9 140 292.9 6.1 142 293.0 6.0 140 293.6 6.2 140 293.7 6.4 140 293.7 6.7

167 292.3 6.7 169 292.2 6.8 167 292.2 6.8 166 292.2 6.8 166 292.1 6.9 166 292.5 7.3 166 292.5 7.6 165 292.4 8.0

181 291.7 7.3 180 291.4 7.6 179 291.6 7.4 182 291.4 7.6 180 291.1 7.9 180 291.8 8.1 181 291.6 8.5 180 291.7 8.7

206 291.0 8.0 205 290.9 8.1 206 290.8 8.2 207 290.4 8.6 208 290.4 8.6 205 291.1 8.8 206 290.8 9.2 205 290.7 9.7

232 289.9 9.1 231 289.8 9.2 232 289.7 9.3 232 289.4 9.6 234 289.2 9.8 234 290.0 9.8 233 289.5 10.5 233 289.8 10.7

258 289.3 9.7 259 289.1 9.9 257 288.9 10.1 258 288.6 10.4 259 288.5 10.5 259 289.1 10.7 260 288.7 11.4 258 288.8 11.6

280 288.3 10.7 277 288.2 10.8 278 288.0 11.0 280 287.8 11.2 277 287.5 11.5 277 288.1 11.8 279 287.8 12.3 277 287.7 12.7

305 287.6 11.4 304 287.5 11.5 305 287.4 11.6 304 287.1 11.9 305 286.8 12.2 305 287.4 12.4 303 287.2 12.9 305 287.0 13.5

329 286.7 12.3 329 286.7 12.3 329 286.5 12.5 329 285.8 13.2 328 285.8 13.2 329 286.2 13.6 329 286.2 13.9 331 286.1 14.3

356 285.9 13.1 354 285.7 13.3 355 285.7 13.3 356 285.2 13.8 354 285.1 13.9 353 285.6 14.3 355 285.2 14.8 354 285.0 15.4

375 285.0 14.0 375 284.8 14.2 374 284.8 14.2 374 284.5 14.5 374 284.1 14.9 374 284.6 15.2 374 284.4 15.7 374 284.2 16.3

399 284.3 14.7 400 284.0 15.0 399 284.1 14.9 399 283.8 15.2 399 283.5 15.5 400 284.0 15.9 399 283.7 16.3 399 283.4 17.0

424 283.4 15.6 425 283.3 15.7 425 283.3 15.7 425 282.5 16.5 424 282.5 16.5 425 283.1 16.8 424 282.5 17.6 423 282.6 17.8

450 282.6 16.4 452 282.5 16.5 449 282.7 16.3 448 282.1 16.9 447 281.7 17.3 450 282.4 17.5 450 281.8 18.3 449 281.7 18.8

466 281.8 17.2 464 281.7 17.3 466 281.6 17.4 464 281.4 17.6 465 280.9 18.1 467 281.4 18.5 465 281.1 18.9 465 280.7 19.7

491 281.1 17.9 490 280.9 18.1 491 280.8 18.2 490 280.3 18.7 489 280.1 18.9 489 280.7 19.1 490 280.2 19.9 491 279.9 20.5

515 280.4 18.6 516 280.2 18.8 517 280.1 18.9 516 279.7 19.3 516 279.2 19.8 514 279.7 20.1 515 279.1 21.0 516 278.9 21.5

539 279.0 20.0 539 278.9 20.1 540 278.9 20.1 538 278.6 20.4 540 278.1 20.9 539 278.6 21.2 540 278.0 22.1 539 277.9 22.6

569 278.4 20.6 569 278.0 21.0 569 277.9 21.1 569 277.6 21.4 569 277.1 21.9 569 277.6 22.3 567 276.9 23.1 568 276.9 23.5

591 277.3 21.7 592 277.3 21.7 591 277.2 21.8 593 276.9 22.1 592 276.4 22.6 592 277.0 22.9 594 276.2 23.8 592 276.1 24.4

617 276.7 22.3 617 276.5 22.5 619 276.3 22.7 616 276.0 23.0 617 275.4 23.6 617 275.7 24.2 619 275.4 24.7 619 275.0 25.4

642 275.8 23.2 641 275.5 23.5 639 275.4 23.6 640 275.1 23.9 641 274.6 24.4 642 275.0 24.8 640 274.4 25.7 639 274.2 26.2

kg mm-1

28.1 kg mm-1

27.9 kg mm-1

27.7 kg mm-1

27.3 kg mm-1

26.7 kg mm-1

26.4 kg mm-1

25.5 kg mm-1

25.0

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 50 kph 24 psi 0.5° 50 kph 24 psi 1° 50 kph 24 psi 1.5° 50 kph 24 psi 2° 50 kph 24 psi 2.5° 50 kph 24 psi 3° 50 kph 24 psi 3.5° 50 kph 24 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

2 299.0 0.0 3 299.0 0.0 2 299.0 0.0 1 299.0 0.0 5 299.0 0.0 1 299.6 0.0 1 299.8 0.0 1 299.8 0.0

35 296.8 2.2 33 297.0 2.0 36 297.5 1.5 36 296.8 2.2 34 296.8 2.2 36 297.9 1.7 36 298.0 1.8 37 298.2 1.6

59 296.1 2.9 61 296.2 2.8 60 296.0 3.0 60 296.0 3.0 59 295.7 3.3 60 296.5 3.1 61 296.6 3.2 60 296.8 3.1

85 294.9 4.1 86 294.7 4.3 85 294.5 4.5 88 294.6 4.4 87 294.7 4.3 86 295.3 4.3 85 295.6 4.2 88 295.6 4.3

115 293.9 5.1 115 293.9 5.1 116 293.9 5.1 115 293.8 5.2 116 293.4 5.6 115 294.2 5.4 116 294.3 5.5 118 294.1 5.7

144 293.2 5.8 142 293.0 6.0 144 293.1 5.9 142 292.8 6.2 143 292.8 6.2 144 293.2 6.4 142 293.2 6.5 143 292.9 6.9

169 292.4 6.6 171 292.5 6.5 169 292.5 6.5 170 292.2 6.8 168 291.9 7.1 169 292.5 7.1 170 292.4 7.3 170 292.4 7.4

183 291.9 7.1 184 291.6 7.4 184 291.6 7.4 183 291.1 7.9 183 290.9 8.1 181 291.5 8.1 182 291.9 7.9 182 291.5 8.4

207 291.2 7.8 211 290.7 8.3 206 290.5 8.5 210 290.3 8.7 209 289.9 9.1 207 290.7 8.9 211 290.4 9.4 210 290.2 9.7

234 290.4 8.6 235 289.9 9.1 235 289.7 9.3 235 289.5 9.5 234 289.1 9.9 234 289.6 10.0 234 289.6 10.2 235 289.2 10.7

262 289.8 9.2 262 289.5 9.5 263 289.3 9.7 262 289.0 10.0 260 288.5 10.5 260 288.9 10.7 260 288.8 11.0 260 288.7 11.1

281 289.1 9.9 278 288.6 10.4 282 288.5 10.5 280 288.0 11.0 279 287.5 11.5 279 287.9 11.6 281 287.8 12.0 279 287.4 12.5

306 288.3 10.7 305 287.7 11.3 307 287.4 11.6 305 286.9 12.1 305 286.4 12.6 307 287.0 12.6 306 286.8 13.0 305 286.3 13.6

331 287.3 11.7 330 287.1 11.9 331 286.7 12.3 331 286.4 12.6 331 285.6 13.4 332 286.1 13.5 329 286.0 13.8 331 285.6 14.2

357 286.7 12.3 358 286.2 12.8 357 286.5 12.5 357 285.6 13.4 355 285.2 13.8 354 285.6 14.0 357 285.4 14.4 355 285.0 14.9

378 285.9 13.1 374 285.6 13.4 377 285.5 13.5 375 284.9 14.1 375 284.2 14.8 377 284.5 15.1 377 284.3 15.4 377 283.9 15.9

401 285.3 13.7 402 284.6 14.4 402 284.2 14.8 401 283.8 15.2 401 283.5 15.5 402 283.6 16.0 401 283.6 16.2 402 282.9 17.0

426 284.3 14.7 425 283.6 15.4 427 283.4 15.6 427 282.9 16.1 427 282.4 16.6 426 283.0 16.6 426 282.8 17.0 425 282.2 17.7

450 283.4 15.6 452 282.9 16.1 451 282.8 16.2 452 282.5 16.5 452 281.9 17.1 451 282.4 17.2 452 282.1 17.7 451 281.6 18.3

467 282.8 16.2 466 282.5 16.5 466 282.2 16.8 466 281.6 17.4 467 281.1 17.9 467 281.5 18.1 466 281.2 18.5 466 280.8 19.0

492 282.1 16.9 491 281.7 17.3 492 281.2 17.8 492 280.7 18.3 492 280.1 18.9 490 280.4 19.2 492 280.2 19.6 492 279.6 20.3

516 281.3 17.7 516 280.6 18.4 518 280.2 18.8 517 280.1 18.9 517 279.3 19.7 518 279.5 20.1 514 279.3 20.5 516 278.8 21.1

542 279.9 19.1 543 279.5 19.5 541 279.3 19.7 541 278.8 20.2 540 278.3 20.7 543 278.6 21.0 545 278.3 21.4 540 277.8 22.1

571 279.0 20.0 570 278.8 20.2 571 278.6 20.4 570 277.8 21.2 570 277.4 21.6 569 277.4 22.2 568 277.3 22.5 570 276.7 23.1

597 278.3 20.7 596 278.0 21.0 597 277.3 21.7 597 277.0 22.0 596 276.7 22.3 593 276.4 23.2 596 276.4 23.4 593 275.9 23.9

620 277.1 21.9 621 276.8 22.2 619 276.5 22.5 621 275.9 23.1 620 275.4 23.6 619 275.7 23.9 620 275.3 24.4 620 274.8 25.0

641 276.4 22.6 644 276.0 23.0 643 276.0 23.0 644 275.4 23.6 644 274.8 24.2 644 274.9 24.7 644 274.7 25.0 644 274.2 25.6

kg mm-1

29.9 kg mm-1

29.3 kg mm-1

28.7 kg mm-1

28.2 kg mm-1

27.6 kg mm-1

26.7 kg mm-1

26.3 kg mm-1

25.5

Page 6: Formula Atlantic Spring Rate Data

Atlantic Front 13083240/600R15

Unloaded dia on 10J x 15 rim:- 598 mm

Readings taken from drum 1/300 mile circumference

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 80 kph 24 psi 0.5° 80 kph 24 psi 1° 80 kph 24 psi 1.5° 80 kph 24 psi 2° 80 kph 24 psi 2.5° 80 kph 24 psi 3° 80 kph 24 psi 3.5° 80 kph 24 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

2 299.0 0.0 1 299.0 0.0 4 299.0 0.0 0 299.0 0.0 1 299.0 0.0 -1 299.4 0.0 0 299.9 0.0 -1 299.9 0.0

37 296.8 2.2 36 297.0 2.0 37 296.9 2.1 34 297.0 2.0 34 296.6 2.4 32 297.5 1.8 36 298.0 1.9 35 298.3 1.6

59 295.8 3.2 59 295.8 3.2 60 295.8 3.2 58 295.8 3.2 59 295.6 3.4 59 296.2 3.2 57 296.5 3.5 58 296.5 3.4

88 294.7 4.3 86 294.9 4.1 86 294.5 4.5 85 294.7 4.3 85 294.1 4.9 85 295.0 4.4 81 295.5 4.4 88 295.3 4.6

115 293.6 5.4 115 293.7 5.3 115 293.4 5.6 116 293.5 5.5 113 293.0 6.0 113 293.7 5.7 113 294.2 5.7 115 293.9 6.0

142 292.6 6.4 141 292.9 6.1 140 292.5 6.5 143 292.6 6.4 142 291.9 7.1 140 292.7 6.7 141 292.9 7.0 141 292.7 7.2

167 292.0 7.0 167 292.1 6.9 169 291.9 7.1 170 291.9 7.1 170 291.2 7.8 168 292.0 7.4 166 292.2 7.7 166 291.9 8.0

184 291.3 7.7 182 291.4 7.6 183 290.7 8.3 182 291.0 8.0 182 290.2 8.8 183 290.8 8.5 182 291.2 8.8 180 291.1 8.8

209 290.3 8.7 207 290.5 8.5 209 289.9 9.1 209 290.0 9.0 206 289.4 9.6 208 289.9 9.4 208 290.2 9.8 206 290.1 9.8

235 289.4 9.6 232 289.4 9.6 234 289.1 9.9 233 289.3 9.7 234 288.4 10.6 232 288.8 10.6 233 289.1 10.9 233 288.9 11.0

258 288.9 10.1 261 288.9 10.1 260 288.7 10.3 260 288.6 10.4 259 287.8 11.2 260 288.3 11.1 261 288.5 11.4 261 288.2 11.7

280 288.4 10.6 278 288.1 10.9 278 287.6 11.4 279 287.4 11.6 278 286.5 12.5 279 287.2 12.2 280 287.4 12.6 280 287.0 12.9

301 287.1 11.9 304 287.2 11.8 306 286.8 12.2 306 286.4 12.6 304 285.7 13.3 305 286.3 13.1 306 286.5 13.4 305 286.1 13.8

329 286.3 12.7 330 286.3 12.7 331 285.9 13.1 329 285.9 13.1 331 285.0 14.0 331 285.5 13.9 331 285.8 14.2 330 285.2 14.7

358 285.6 13.4 356 285.6 13.4 356 285.2 13.8 355 285.3 13.7 357 284.7 14.3 356 284.9 14.5 354 285.0 14.9 356 284.5 15.4

374 285.0 14.0 375 284.8 14.2 376 284.4 14.6 377 284.2 14.8 375 283.5 15.5 377 283.7 15.7 375 283.9 16.0 376 283.4 16.6

399 283.9 15.1 398 283.8 15.2 401 283.5 15.5 400 283.3 15.7 399 282.5 16.5 399 283.0 16.3 402 282.9 17.0 401 282.6 17.3

426 283.0 16.0 426 283.1 15.9 425 282.3 16.7 424 282.5 16.5 424 281.7 17.3 426 282.2 17.2 428 281.9 18.0 427 281.5 18.4

452 282.2 16.8 451 282.4 16.6 450 281.9 17.1 448 281.9 17.1 451 281.1 17.9 450 281.6 17.8 452 281.6 18.3 450 281.0 18.9

467 281.7 17.3 467 281.7 17.3 466 281.2 17.8 467 281.1 17.9 467 280.1 18.9 466 280.5 18.9 465 280.7 19.2 466 280.0 19.9

493 280.7 18.3 491 280.5 18.5 492 280.2 18.8 490 280.2 18.8 492 279.2 19.8 491 279.6 19.8 492 279.6 20.3 491 279.1 20.8

515 279.9 19.1 516 279.6 19.4 518 279.2 19.8 517 279.1 19.9 516 278.2 20.8 516 278.8 20.6 516 278.7 21.2 518 278.1 21.8

541 278.5 20.5 540 278.7 20.3 541 278.2 20.8 540 278.3 20.7 540 277.3 21.7 541 277.6 21.8 539 277.6 22.4 542 277.0 22.9

570 278.0 21.0 570 277.7 21.3 569 277.3 21.7 571 277.2 21.8 569 275.9 23.1 567 276.6 22.8 569 276.4 23.5 571 276.0 23.9

593 276.6 22.4 594 276.6 22.4 594 276.2 22.8 594 276.1 22.9 593 275.1 23.9 592 275.5 23.9 593 275.6 24.4 594 274.9 25.0

621 275.7 23.3 620 275.6 23.4 619 275.3 23.7 621 275.2 23.8 617 274.2 24.8 619 274.8 24.6 619 274.9 25.0 616 274.1 25.8

642 275.0 24.0 641 274.9 24.1 643 274.7 24.3 642 274.7 24.3 642 273.5 25.5 642 274.0 25.4 643 273.8 26.1 643 273.1 26.8

kg mm-1

28.0 kg mm-1

27.7 kg mm-1

27.4 kg mm-1

27.3 kg mm-1

26.3 kg mm-1

26.1 kg mm-1

25.5 kg mm-1

24.7

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 100 kph 24 psi 0.5° 100 kph 24 psi 1° 100 kph 24 psi 1.5° 100 kph 24 psi 2° 100 kph 24 psi 2.5° 100 kph 24 psi 3° 100 kph 24 psi 3.5° 100 kph 24 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

0 299.1 -0.1 1 299.2 -0.2 0 299.3 -0.3 -1 299.3 -0.3 1 299.1 -0.1 3 299.8 -0.4 3 299.9 0.0 2 299.9 0.0

35 297.0 2.0 36 297.2 1.8 36 297.2 1.8 33 297.7 1.3 35 297.1 1.9 34 297.8 1.6 37 298.0 1.9 35 298.2 1.8

59 295.7 3.3 59 295.8 3.2 58 295.8 3.2 57 296.0 3.0 56 295.6 3.4 59 296.3 3.1 61 296.4 3.6 57 296.5 3.4

85 294.6 4.4 84 294.9 4.1 85 294.6 4.4 85 295.8 3.2 83 294.5 4.5 86 295.2 4.2 89 295.4 4.5 86 295.2 4.7

113 293.6 5.4 113 293.5 5.5 112 293.7 5.3 113 293.7 5.3 115 293.4 5.6 113 294.1 5.3 115 294.1 5.8 114 293.9 6.0

144 292.6 6.4 143 292.8 6.2 140 293.0 6.0 140 292.8 6.2 143 292.3 6.7 142 292.8 6.6 144 292.9 7.0 141 292.7 7.2

168 292.0 7.0 168 292.1 6.9 168 291.9 7.1 168 292.0 7.0 168 291.5 7.5 167 292.1 7.3 169 292.0 7.9 169 291.8 8.1

182 291.2 7.8 185 291.3 7.7 181 291.0 8.0 182 291.0 8.0 181 290.5 8.5 182 291.3 8.1 182 291.1 8.8 181 291.1 8.9

208 290.3 8.7 207 290.6 8.4 207 290.2 8.8 207 290.2 8.8 207 289.6 9.4 209 290.1 9.3 209 290.1 9.8 205 289.8 10.1

232 289.2 9.8 232 289.1 9.9 233 289.3 9.7 234 289.4 9.6 233 288.8 10.2 233 289.3 10.1 235 289.2 10.8 235 288.8 11.1

260 288.9 10.1 260 288.8 10.2 261 288.6 10.4 260 288.7 10.3 261 288.1 10.9 258 288.6 10.8 261 288.4 11.5 260 288.1 11.8

280 287.9 11.1 279 288.1 10.9 279 287.9 11.1 280 288.0 11.0 278 286.9 12.1 279 287.5 11.9 279 287.3 12.6 278 286.9 13.0

305 287.2 11.8 307 287.1 11.9 303 286.9 12.1 305 287.0 12.0 306 286.2 12.8 302 286.6 12.8 309 286.4 13.5 307 286.0 13.9

330 286.1 12.9 330 286.2 12.8 329 286.0 13.0 331 286.0 13.0 331 285.3 13.7 328 285.6 13.8 331 285.6 14.4 330 285.1 14.8

358 285.6 13.4 356 285.6 13.4 353 285.3 13.7 357 285.4 13.6 357 284.7 14.3 354 285.1 14.3 357 284.8 15.1 354 284.2 15.7

375 284.7 14.3 376 284.8 14.2 377 284.6 14.4 375 284.6 14.4 375 283.5 15.5 375 284.1 15.3 377 283.8 16.2 377 283.5 16.4

400 283.7 15.3 399 283.8 15.2 396 283.6 15.4 401 283.7 15.3 401 282.8 16.2 400 283.3 16.1 403 282.9 17.1 401 282.5 17.4

422 282.9 16.1 426 282.9 16.1 424 282.7 16.3 425 282.8 16.2 423 282.0 17.0 424 282.4 17.0 428 282.0 18.0 424 281.5 18.4

450 282.1 16.9 451 282.4 16.6 451 282.3 16.7 451 282.1 16.9 451 281.3 17.7 450 281.8 17.6 450 281.7 18.3 451 281.0 18.9

466 281.5 17.5 465 281.7 17.3 467 281.5 17.5 465 281.5 17.5 466 280.5 18.5 465 281.0 18.4 466 280.4 19.5 467 280.0 19.9

490 280.7 18.3 492 280.5 18.5 492 280.3 18.7 493 280.3 18.7 491 279.5 19.5 490 280.1 19.3 492 279.6 20.3 491 279.1 20.8

516 279.8 19.2 518 279.7 19.3 515 279.2 19.8 517 279.4 19.6 516 278.6 20.4 516 279.0 20.4 520 278.7 21.3 514 278.2 21.7

540 278.7 20.3 540 278.8 20.2 539 278.4 20.6 540 278.3 20.7 540 277.7 21.3 540 278.0 21.4 541 277.7 22.3 542 277.2 22.7

569 277.7 21.3 566 277.7 21.3 569 277.5 21.5 568 277.4 21.6 569 276.4 22.6 569 276.8 22.6 570 276.6 23.3 570 276.2 23.7

595 276.6 22.4 593 276.8 22.2 594 276.5 22.5 593 276.4 22.6 594 275.5 23.5 593 275.7 23.7 596 275.5 24.4 594 275.0 24.9

621 276.1 22.9 617 275.7 23.3 617 275.2 23.8 618 275.4 23.6 618 274.4 24.6 617 275.0 24.4 623 274.8 25.2 620 274.2 25.7

642 275.0 24.0 643 275.0 24.0 642 274.8 24.2 641 274.8 24.2 641 273.9 25.1 641 274.3 25.1 644 273.9 26.1 642 273.4 26.5

kg mm-1

28.0 kg mm-1

27.8 kg mm-1

27.4 kg mm-1

27.0 kg mm-1

26.4 kg mm-1

26.0 kg mm-1

25.5 kg mm-1

25.0

Page 7: Formula Atlantic Spring Rate Data

Atlantic Front 13083240/600R15

Unloaded dia on 10J x 15 rim:- 598 mm

Readings taken from drum 1/300 mile circumference

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 140 kph 24 psi 0.5° 140 kph 24 psi 1° 140 kph 24 psi 1.5° 140 kph 24 psi 2° 140 kph 24 psi 2.5° 140 kph 24 psi 3° 140 kph 24 psi 3.5° 140 kph 24 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

2 299.6 -0.6 2 299.8 -0.8 1 299.7 -0.7 -1 300.0 -1.0 0 299.6 -0.6 1 300.4 -1.0 2 301.1 -1.1 0 300.8 -0.9

35 297.5 1.5 36 297.7 1.3 37 297.6 1.4 34 297.8 1.2 35 297.4 1.6 34 298.4 1.0 36 299.1 0.9 36 298.8 1.1

60 296.2 2.8 60 296.2 2.8 61 296.3 2.7 58 296.6 2.4 60 295.9 3.1 59 296.6 2.8 59 297.5 2.5 61 297.1 2.8

86 295.0 4.0 82 295.3 3.7 85 294.9 4.1 87 295.1 3.9 86 294.7 4.3 84 295.6 3.8 85 296.0 4.0 85 295.6 4.3

113 294.0 5.0 115 294.1 4.9 114 293.9 5.1 114 294.0 5.0 114 293.5 5.5 114 294.4 5.0 113 294.7 5.3 113 294.3 5.6

144 292.9 6.1 141 293.0 6.0 141 292.6 6.4 141 293.0 6.0 143 292.4 6.6 142 292.9 6.4 142 293.5 6.4 141 293.0 6.9

168 292.4 6.6 167 292.3 6.7 166 292.1 6.9 168 292.3 6.7 166 291.7 7.3 166 292.3 7.0 167 292.3 7.6 166 292.2 7.7

183 291.6 7.4 182 291.7 7.3 179 291.4 7.6 180 291.5 7.5 182 290.9 8.1 182 291.5 7.9 180 292.0 7.9 180 291.5 8.4

209 290.9 8.1 207 290.7 8.3 208 290.4 8.6 206 290.6 8.4 207 289.9 9.1 206 290.5 8.9 206 290.7 9.2 207 290.3 9.6

234 289.7 9.3 235 289.5 9.5 236 289.5 9.5 235 289.7 9.3 234 288.9 10.1 233 289.3 10.1 235 289.8 10.2 231 289.2 10.7

261 289.2 9.8 261 289.4 9.6 260 288.8 10.2 259 289.0 10.0 259 288.3 10.7 259 288.7 10.7 261 288.9 11.1 261 288.3 11.6

280 288.5 10.5 280 288.6 10.4 277 288.3 10.7 279 288.2 10.8 279 287.5 11.5 279 287.9 11.5 279 288.2 11.8 279 287.5 12.4

305 287.5 11.5 305 287.5 11.5 306 287.2 11.8 304 287.1 11.9 305 286.5 12.5 306 286.9 12.5 306 287.1 12.8 306 286.8 13.1

331 286.8 12.2 329 286.6 12.4 330 286.3 12.7 331 286.2 12.8 330 285.5 13.5 330 285.9 13.5 331 286.3 13.7 328 285.5 14.4

356 285.9 13.1 356 286.0 13.0 357 285.7 13.3 356 285.7 13.3 356 284.9 14.1 354 285.3 14.1 355 285.4 14.5 356 285.0 14.9

374 285.1 13.9 375 285.3 13.7 376 285.0 14.0 376 285.1 13.9 376 284.2 14.8 375 284.5 14.9 374 284.6 15.3 375 284.0 15.9

401 284.9 14.1 400 284.7 14.3 402 284.1 14.9 400 284.0 15.0 399 283.3 15.7 400 283.7 15.7 402 283.7 16.2 401 283.1 16.8

426 283.4 15.6 425 283.6 15.4 427 283.2 15.8 425 283.1 15.9 425 282.5 16.5 425 282.7 16.7 426 282.6 17.3 425 282.1 17.8

451 283.0 16.0 451 282.9 16.1 450 282.5 16.5 451 282.5 16.5 449 281.8 17.2 451 282.4 17.0 450 282.1 17.9 450 281.4 18.5

468 282.3 16.7 467 282.3 16.7 465 281.8 17.2 464 281.9 17.1 465 281.1 17.9 467 281.6 17.8 465 281.6 18.3 465 281.3 18.6

491 281.7 17.3 491 281.4 17.6 491 281.1 17.9 491 281.1 17.9 491 279.9 19.1 491 280.4 19.0 491 280.4 19.6 490 279.9 20.0

518 280.3 18.7 517 280.4 18.6 515 280.1 18.9 517 280.2 18.8 515 279.3 19.7 514 279.6 19.8 515 279.8 20.1 518 279.0 20.9

538 279.4 19.6 539 279.6 19.4 541 278.8 20.2 541 279.0 20.0 540 278.1 20.9 540 278.6 20.8 539 278.5 21.4 541 278.0 21.9

570 278.5 20.5 568 278.5 20.5 570 278.2 20.8 570 278.2 20.8 568 277.2 21.8 566 277.8 21.5 569 277.7 22.3 570 277.1 22.8

594 277.7 21.3 593 277.6 21.4 592 277.0 22.0 594 277.4 21.6 593 276.3 22.7 592 276.7 22.7 593 276.7 23.3 592 276.1 23.9

619 276.6 22.4 618 276.7 22.3 617 276.1 22.9 618 276.0 23.0 618 275.2 23.8 618 275.6 23.8 617 275.9 24.0 619 275.0 24.9

643 275.8 23.2 644 275.7 23.3 640 275.5 23.5 642 275.5 23.5 642 274.6 24.4 641 275.1 24.3 642 275.0 24.9 642 274.5 25.4

kg mm-1

28.5 kg mm-1

28.4 kg mm-1

27.9 kg mm-1

27.7 kg mm-1

27.0 kg mm-1

26.5 kg mm-1

25.7 kg mm-1

25.4

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 170 kph 24 psi 0.5° 170 kph 24 psi 1° 170 kph 24 psi 1.5° 170 kph 24 psi 2° 170 kph 24 psi 2.5° 170 kph 24 psi 3° 170 kph 24 psi 3.5° 170 kph 24 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

3 299.6 -0.6 2 299.8 -0.8 3 299.7 -0.7 4 300.1 -1.1 1 300.0 -1.0 3 301.1 -1.7 2 301.5 -1.6 4 301.5 -1.6

36 297.5 1.5 38 297.8 1.2 37 297.6 1.4 38 298.2 0.8 39 298.0 1.0 36 299.1 0.3 36 299.5 0.4 37 299.2 0.7

60 296.1 2.9 61 296.3 2.7 60 296.4 2.6 60 296.6 2.4 60 296.5 2.5 59 297.5 1.9 58 297.9 2.1 61 297.6 2.3

85 294.9 4.1 86 294.9 4.1 85 295.2 3.8 86 295.3 3.7 87 295.3 3.7 88 296.0 3.4 85 296.3 3.6 87 296.0 3.9

115 293.5 5.5 115 293.5 5.5 116 293.7 5.3 115 294.0 5.0 113 293.6 5.4 116 294.4 5.0 115 294.9 5.0 116 294.6 5.3

142 292.5 6.5 145 292.5 6.5 142 292.6 6.4 143 293.0 6.0 142 292.4 6.6 141 293.2 6.2 143 293.6 6.3 142 293.1 6.8

167 291.8 7.2 168 291.8 7.2 169 291.8 7.2 167 291.9 7.1 168 291.6 7.4 167 292.4 7.0 169 292.5 7.4 168 292.1 7.8

180 291.5 7.5 182 290.7 8.3 181 290.7 8.3 182 290.9 8.1 181 290.9 8.1 181 291.6 7.8 182 291.8 8.1 180 291.6 8.3

209 290.1 8.9 205 290.0 9.0 208 289.9 9.1 209 290.1 8.9 208 289.8 9.2 207 290.4 9.0 208 290.8 9.1 207 290.4 9.5

231 289.4 9.6 232 289.3 9.7 233 289.1 9.9 233 289.3 9.7 232 288.8 10.2 234 289.5 9.9 232 289.7 10.2 233 289.2 10.7

259 288.8 10.2 259 288.6 10.4 259 288.6 10.4 260 288.6 10.4 259 288.2 10.8 260 288.8 10.6 259 289.0 11.0 259 288.3 11.6

279 288.1 10.9 279 287.9 11.1 278 287.9 11.1 278 287.7 11.3 281 287.5 11.5 280 287.8 11.5 279 287.9 12.0 278 287.5 12.4

302 287.2 11.8 306 287.0 12.0 304 286.9 12.1 303 287.0 12.0 305 286.5 12.5 305 287.1 12.3 304 287.1 12.8 303 286.5 13.5

330 286.3 12.7 330 286.1 12.9 329 286.1 12.9 329 286.0 13.0 329 285.6 13.4 331 286.1 13.3 330 286.4 13.5 329 285.8 14.1

356 285.6 13.4 356 285.4 13.6 356 285.3 13.7 355 285.3 13.7 355 284.8 14.2 354 285.2 14.2 355 285.5 14.5 355 284.7 15.2

374 285.1 13.9 373 284.9 14.1 374 284.8 14.2 374 284.4 14.6 375 284.2 14.8 374 284.8 14.6 374 284.7 15.3 374 284.0 15.9

400 284.0 15.0 401 283.8 15.2 399 283.6 15.4 399 283.7 15.3 402 283.4 15.6 400 283.8 15.6 399 283.8 16.2 401 283.0 16.9

425 283.4 15.6 425 283.0 16.0 426 282.9 16.1 425 282.7 16.3 424 282.2 16.8 424 282.9 16.5 424 282.9 17.1 427 282.0 17.9

449 282.4 16.6 449 282.3 16.7 450 282.4 16.6 450 282.1 16.9 449 281.6 17.4 450 282.1 17.3 450 282.1 17.9 449 281.2 18.7

465 281.7 17.3 465 281.8 17.2 466 281.7 17.3 465 281.8 17.2 464 281.1 17.9 466 281.8 17.6 466 281.7 18.2 465 280.9 19.0

489 280.9 18.1 490 280.9 18.1 491 281.1 17.9 490 280.6 18.4 490 280.0 19.0 492 280.6 18.8 491 280.5 19.5 489 279.8 20.1

513 280.1 18.9 515 279.9 19.1 515 279.8 19.2 515 279.7 19.3 515 279.2 19.8 515 279.8 19.6 515 279.7 20.2 516 278.7 21.2

539 278.9 20.1 540 278.8 20.2 539 278.9 20.1 540 278.9 20.1 538 278.6 20.4 539 278.8 20.6 539 278.8 21.1 538 277.9 22.0

567 278.2 20.8 568 278.2 20.8 568 278.0 21.0 567 278.1 20.9 568 277.4 21.6 570 277.9 21.5 568 278.1 21.9 568 277.2 22.8

593 276.8 22.2 594 277.0 22.0 593 276.8 22.2 593 276.8 22.2 593 276.3 22.7 592 276.8 22.6 593 277.0 23.0 592 276.2 23.7

617 276.1 22.9 618 276.0 23.0 617 275.9 23.1 618 276.0 23.0 619 275.2 23.8 617 275.9 23.5 617 275.9 24.0 617 275.1 24.8

641 275.1 23.9 642 275.2 23.8 641 275.4 23.6 642 275.1 23.9 641 274.4 24.6 641 275.0 24.4 641 275.2 24.8 640 274.5 25.4

kg mm-1

27.8 kg mm-1

27.7 kg mm-1

27.6 kg mm-1

27.0 kg mm-1

26.4 kg mm-1

25.9 kg mm-1

25.4 kg mm-1

24.7

1 kg/mm = 55.9 lb/in

CONFIDENTIAL, PROPRIETARY AND / OR TRADE SECRET INFORMATION.

The information contained in this document is intended only for the use of the individual to whom it was sent and may contain confidential, proprietary and / or trade secret information that is the property of Cooper Tire and Rubber Company and / or Cooper-Avon Tyres Limited. If the reader of this

document is not the intended recipient, you are hereby notified that you should not read any further, and any dissemination, distribution or copying of this communication is strictly prohibited. Copyright © Unpublished.

Page 8: Formula Atlantic Spring Rate Data

Atlantic Rear 13090330/620R15

Unloaded dia on 14J x 15 rim:- 619 mm

Readings taken from a flat plate

Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure

0° 26 psi 0.5° 26 psi 1° 26 psi 1.5° 26 psi 2° 26 psi 2.5° 26 psi 3° 26 psi 3.5° 26 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

2 309.5 0.0 3 309.5 0.0 3 309.5 0.0 2 309.5 0.0 1 309.5 0.0 1 310.9 0.0 3 311.3 0.0 1 311.7 0.0

38 308.7 0.8 36 308.5 1.0 37 308.0 1.5 35 307.9 1.6 36 307.8 1.7 35 309.6 1.3 34 310.1 1.2 35 310.0 1.7

62 308.1 1.4 61 308.1 1.4 60 307.2 2.3 61 307.2 2.3 60 306.8 2.7 60 308.4 2.5 60 308.8 2.5 59 309.2 2.5

89 307.7 1.8 87 307.2 2.3 87 306.6 2.9 86 306.4 3.1 85 306.0 3.5 86 307.3 3.6 86 307.8 3.5 85 307.8 3.8

118 306.6 2.9 116 306.1 3.4 116 305.4 4.1 116 305.1 4.4 116 305.2 4.3 115 306.5 4.4 115 306.9 4.4 112 306.8 4.9

143 305.4 4.1 144 305.2 4.3 145 304.6 4.9 144 304.3 5.2 142 303.9 5.6 143 305.4 5.5 142 305.6 5.7 142 305.8 5.8

171 304.8 4.7 170 304.5 5.0 171 304.0 5.5 172 303.7 5.8 169 303.3 6.2 169 304.5 6.3 169 304.7 6.6 169 304.9 6.8

185 304.5 5.0 184 304.1 5.4 184 303.7 5.8 184 303.2 6.3 184 302.8 6.7 183 304.0 6.9 182 304.4 6.9 182 304.1 7.6

209 303.9 5.6 211 303.8 5.7 209 303.1 6.4 208 302.7 6.8 209 302.1 7.4 208 303.4 7.5 207 303.4 7.9 207 303.3 8.4

235 303.2 6.3 237 302.9 6.6 236 302.3 7.2 235 301.9 7.6 237 301.3 8.2 234 302.5 8.4 235 302.7 8.6 234 302.5 9.2

261 302.3 7.2 263 302.3 7.2 263 301.6 7.9 262 301.5 8.0 261 300.7 8.8 261 301.8 9.1 261 301.6 9.7 262 301.5 10.1

281 301.8 7.7 281 301.7 7.8 282 301.3 8.2 281 300.6 8.9 279 300.0 9.5 279 301.1 9.7 279 300.9 10.3 280 300.7 10.9

306 301.2 8.3 307 301.1 8.4 307 300.4 9.1 307 300.2 9.3 306 299.4 10.1 306 300.4 10.5 305 300.2 11.1 306 299.8 11.8

331 300.7 8.8 331 300.9 8.6 331 299.8 9.7 331 299.5 10.0 331 298.8 10.7 330 299.9 11.0 330 299.7 11.6 331 299.2 12.5

359 300.2 9.3 358 300.2 9.3 357 299.3 10.2 358 299.3 10.2 357 298.1 11.4 357 299.3 11.5 358 299.6 11.7 356 298.6 13.1

378 299.5 10.0 378 299.1 10.4 378 298.4 11.1 377 298.3 11.2 377 297.5 12.0 377 298.3 12.6 376 298.2 13.0 375 297.9 13.7

402 298.8 10.7 403 298.6 10.9 402 298.4 11.1 403 297.5 12.0 403 296.8 12.7 400 297.9 13.0 401 297.7 13.6 402 297.2 14.5

428 298.0 11.5 429 298.1 11.4 429 297.5 12.0 427 296.9 12.6 426 296.2 13.3 425 297.2 13.7 426 296.9 14.4 425 296.5 15.1

452 297.7 11.8 452 297.6 11.9 452 297.3 12.2 451 296.5 13.0 451 295.8 13.7 451 296.9 14.0 450 296.6 14.7 451 296.0 15.7

469 297.2 12.3 467 297.2 12.3 468 296.4 13.1 468 296.1 13.4 467 295.5 14.0 466 296.3 14.5 465 296.2 15.1 467 295.5 16.2

494 297.0 12.5 494 296.8 12.7 492 296.0 13.5 492 295.6 13.9 493 294.7 14.8 493 295.7 15.2 491 295.4 15.9 492 294.8 16.8

521 296.2 13.3 518 296.2 13.3 516 295.1 14.4 517 294.7 14.8 518 294.0 15.5 518 294.9 16.0 516 294.7 16.6 518 294.1 17.5

543 295.2 14.3 542 295.1 14.4 544 294.4 15.1 541 294.0 15.5 543 293.3 16.2 542 294.2 16.7 541 293.9 17.4 541 293.4 18.3

570 294.7 14.8 570 294.5 15.0 570 293.7 15.8 571 293.5 16.0 570 292.6 16.9 570 293.5 17.4 569 293.2 18.1 571 292.7 19.0

597 294.1 15.4 595 294.2 15.3 595 293.4 16.1 595 293.0 16.5 594 292.1 17.4 595 293.2 17.7 596 292.7 18.6 596 292.3 19.3

623 293.5 16.0 622 293.5 16.0 621 292.8 16.7 621 292.2 17.3 622 291.7 17.8 619 293.0 17.8 619 292.8 18.5 619 291.7 20.0

643 293.3 16.2 642 292.9 16.6 644 292.3 17.2 644 291.8 17.7 643 291.1 18.4 643 292.1 18.8 644 291.9 19.3 643 291.2 20.5

kg mm-1

38.7 kg mm-1

39.0 kg mm-1

38.3 kg mm-1

37.5 kg mm-1

36.0 kg mm-1

34.9 kg mm-1

33.2 kg mm-1

31.6

Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure

0° 24 psi 0.5° 24 psi 1° 24 psi 1.5° 24 psi 2° 24 psi 2.5° 24 psi 3° 24 psi 3.5° 24 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

1 309.5 0.0 -1 309.5 0.0 0 309.5 0.0 0 309.5 0.0 0 309.5 0.0 -1 311.2 0.0 1 311.4 0.0 -1 311.7 0.0

34 308.3 1.2 34 308.4 1.1 35 308.7 0.8 33 308.2 1.3 34 307.8 1.7 34 309.6 1.6 33 310.0 1.4 33 310.1 1.6

57 307.7 1.8 58 307.7 1.8 58 307.5 2.0 59 307.1 2.4 58 306.8 2.7 57 308.6 2.6 59 308.7 2.7 57 308.9 2.7

85 306.8 2.7 85 307.0 2.5 85 306.7 2.8 84 305.9 3.6 84 305.7 3.8 85 307.5 3.8 84 307.8 3.6 83 307.7 4.0

113 305.9 3.6 115 305.8 3.7 115 305.5 4.0 113 305.1 4.4 112 304.6 4.9 113 306.7 4.6 114 306.6 4.8 112 306.6 5.0

142 305.1 4.4 142 305.0 4.5 143 304.7 4.8 142 304.1 5.4 142 303.6 5.9 141 305.4 5.8 142 305.1 6.4 141 305.5 6.2

167 304.3 5.2 168 304.4 5.1 168 304.1 5.4 167 303.5 6.0 169 303.1 6.4 169 304.5 6.8 168 304.4 7.0 169 304.4 7.3

181 304.0 5.5 182 304.1 5.4 181 303.7 5.8 181 302.9 6.6 182 302.6 6.9 180 304.1 7.2 181 303.9 7.5 181 303.6 8.1

206 303.0 6.5 208 303.0 6.5 207 302.7 6.8 208 302.1 7.4 207 301.9 7.6 207 303.2 8.0 207 303.1 8.3 207 302.9 8.8

233 302.2 7.3 233 302.3 7.2 234 301.9 7.6 233 301.7 7.8 232 300.9 8.6 232 302.2 9.1 233 302.1 9.4 232 302.0 9.7

260 301.5 8.0 260 301.7 7.8 260 301.4 8.1 260 300.6 8.9 260 300.1 9.4 259 301.7 9.5 259 301.2 10.3 258 301.1 10.6

280 301.1 8.4 279 301.2 8.3 280 301.0 8.5 280 300.5 9.0 280 299.5 10.0 279 301.0 10.3 279 300.5 10.9 279 300.1 11.6

305 300.6 8.9 304 300.5 9.0 304 300.3 9.2 305 299.9 9.6 302 299.1 10.4 306 300.4 10.9 304 299.8 11.7 305 299.4 12.2

329 300.0 9.5 330 299.8 9.7 330 299.5 10.0 330 298.7 10.8 329 298.0 11.5 332 299.6 11.7 330 299.2 12.2 330 298.5 13.2

356 299.3 10.2 356 299.2 10.3 355 299.0 10.5 355 298.1 11.4 359 297.6 11.9 356 298.9 12.3 355 298.3 13.2 356 297.8 13.9

374 298.5 11.0 375 298.6 10.9 376 298.3 11.2 376 297.4 12.1 376 296.7 12.8 375 298.3 13.0 375 297.7 13.8 376 297.0 14.6

400 297.9 11.6 400 297.9 11.6 401 297.6 11.9 400 296.9 12.6 399 296.2 13.3 401 297.6 13.7 399 297.0 14.4 400 296.2 15.5

425 297.4 12.1 426 297.2 12.3 425 297.0 12.5 423 296.4 13.1 424 295.9 13.6 425 297.0 14.2 425 296.3 15.1 426 295.5 16.2

450 297.2 12.3 451 297.0 12.5 450 296.6 12.9 450 295.7 13.8 452 295.2 14.3 450 296.4 14.8 448 295.8 15.6 451 295.3 16.4

466 296.5 13.0 467 296.4 13.1 467 295.9 13.6 466 295.2 14.3 466 294.4 15.1 466 295.6 15.6 464 295.1 16.3 467 294.5 17.1

492 295.7 13.8 491 295.7 13.8 492 295.2 14.3 491 294.6 14.9 490 293.8 15.7 490 295.2 16.1 490 294.5 16.9 490 294.0 17.7

515 295.0 14.5 515 295.1 14.4 517 294.8 14.7 517 293.6 15.9 516 293.1 16.4 515 294.4 16.9 516 293.7 17.7 516 293.0 18.6

541 294.3 15.2 539 294.4 15.1 541 293.9 15.6 541 293.1 16.4 540 292.4 17.1 541 293.7 17.5 538 293.0 18.4 538 292.4 19.3

569 293.8 15.7 567 293.8 15.7 570 293.5 16.0 568 292.7 16.8 571 292.0 17.5 568 293.5 17.7 569 292.6 18.8 569 291.9 19.8

594 293.1 16.4 593 293.1 16.4 593 292.8 16.7 593 292.0 17.5 594 291.4 18.1 593 292.7 18.6 593 292.1 19.4 592 291.3 20.4

620 292.3 17.2 619 292.3 17.2 618 292.1 17.4 616 291.3 18.2 618 290.6 18.9 619 291.9 19.3 617 291.3 20.1 619 290.9 20.8

641 291.9 17.6 640 291.8 17.7 642 291.0 18.5 640 290.8 18.7 643 290.0 19.5 641 291.4 19.9 642 291.1 20.3 641 290.1 21.6

kg mm-1

36.9 kg mm-1

36.7 kg mm-1

36.0 kg mm-1

35.1 kg mm-1

34.3 kg mm-1

33.2 kg mm-1

31.5 kg mm-1

30.0

Page 9: Formula Atlantic Spring Rate Data

Atlantic Rear 13090330/620R15

Unloaded dia on 14J x 15 rim:- 619 mm

Readings taken from a flat plate

Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure

0° 22 psi 0.5° 22 psi 1° 22 psi 1.5° 22 psi 2° 22 psi 2.5° 22 psi 3° 22 psi 3.5° 22 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

1 309.5 0.0 -1 309.5 0.0 0 309.5 0.0 0 309.5 0.0 -1 309.5 0.0 1 311.7 0.0 0 311.7 0.0 1 311.5 0.0

35 308.4 1.1 36 308.4 1.1 34 308.3 1.2 34 308.1 1.4 34 307.5 2.0 33 309.8 1.9 33 310.1 1.5 33 310.0 1.5

56 307.7 1.8 58 307.5 2.0 58 307.4 2.1 59 307.2 2.3 59 307.0 2.5 56 308.5 3.2 57 308.8 2.8 57 308.6 2.8

86 306.6 2.9 86 306.5 3.0 85 306.4 3.1 83 306.0 3.5 85 305.7 3.8 85 307.9 3.8 84 307.7 4.0 84 307.5 4.0

114 305.6 3.9 114 305.6 3.9 114 305.5 4.0 114 305.0 4.5 114 304.3 5.2 114 306.7 5.0 113 306.5 5.2 113 306.4 5.1

143 304.9 4.6 143 305.0 4.5 141 304.8 4.7 142 304.2 5.3 142 303.8 5.7 142 305.4 6.3 142 305.3 6.3 141 305.3 6.1

169 304.4 5.1 169 304.2 5.3 168 304.2 5.3 169 303.7 5.8 166 303.0 6.5 167 304.7 7.0 168 304.5 7.2 168 304.0 7.4

182 303.5 6.0 182 303.5 6.0 180 303.3 6.2 180 302.7 6.8 181 302.2 7.3 180 304.0 7.7 180 304.2 7.5 182 303.1 8.4

209 302.8 6.7 205 302.7 6.8 207 302.5 7.0 207 302.0 7.5 208 301.6 7.9 207 303.1 8.6 206 302.7 9.0 207 302.2 9.3

235 301.9 7.6 234 301.9 7.6 233 301.9 7.6 233 301.0 8.5 233 300.5 9.0 233 302.1 9.6 234 301.9 9.8 232 301.4 10.1

261 301.5 8.0 261 301.5 8.0 260 301.4 8.1 260 300.8 8.7 260 299.9 9.6 259 301.5 10.2 259 301.1 10.6 259 300.4 11.1

279 300.9 8.6 280 300.9 8.6 279 300.6 8.9 280 300.0 9.5 278 299.1 10.4 278 300.7 11.0 278 300.4 11.3 278 299.6 11.8

306 300.1 9.4 305 299.9 9.6 305 300.1 9.4 306 299.1 10.4 305 298.3 11.2 306 299.8 11.9 305 299.5 12.2 304 298.9 12.5

330 299.3 10.2 330 299.2 10.3 330 299.0 10.5 330 298.5 11.0 330 297.5 12.0 330 299.1 12.6 330 298.6 13.1 330 297.9 13.5

355 298.7 10.8 356 298.6 10.9 357 298.4 11.1 356 297.8 11.7 356 297.0 12.5 354 298.5 13.2 355 298.0 13.7 355 297.2 14.3

377 298.3 11.2 375 297.9 11.6 376 297.9 11.6 375 297.4 12.1 374 296.3 13.2 374 297.8 13.9 374 297.4 14.3 375 296.4 15.1

400 297.7 11.8 399 297.6 11.9 400 297.3 12.2 400 296.7 12.8 399 295.8 13.7 400 297.1 14.6 400 296.7 15.0 397 295.9 15.6

425 296.9 12.6 425 296.6 12.9 426 296.4 13.1 426 295.7 13.8 424 294.8 14.7 425 296.3 15.4 423 295.8 15.8 424 294.9 16.5

450 296.2 13.3 451 296.1 13.4 450 295.8 13.7 449 295.2 14.3 450 294.3 15.2 451 295.9 15.8 450 295.4 16.3 448 294.5 16.9

466 296.0 13.5 465 295.7 13.8 465 295.4 14.1 464 294.6 14.9 466 293.6 15.9 465 295.3 16.4 467 294.4 17.2 467 293.7 17.8

492 295.0 14.5 492 295.2 14.3 491 295.0 14.5 492 294.0 15.5 492 293.1 16.4 491 294.6 17.1 491 294.0 17.7 491 293.1 18.4

518 294.4 15.1 516 294.3 15.2 516 294.3 15.2 516 293.5 16.0 514 292.5 17.0 516 294.1 17.6 517 293.4 18.3 517 293.1 18.3

541 293.6 15.9 540 293.6 15.9 541 293.1 16.4 540 292.6 16.9 540 291.6 17.9 539 293.0 18.7 540 292.5 19.1 540 291.9 19.6

570 292.9 16.6 570 292.7 16.8 568 292.6 16.9 568 291.9 17.6 569 291.0 18.5 570 292.5 19.2 569 291.9 19.8 568 291.0 20.4

595 292.2 17.3 595 292.1 17.4 594 291.7 17.8 593 291.2 18.3 593 290.3 19.2 594 291.7 20.0 594 291.1 20.6 592 290.2 21.2

619 291.6 17.9 619 291.5 18.0 619 291.3 18.2 619 290.6 18.9 619 289.6 19.9 619 291.3 20.4 618 290.6 21.1 618 289.7 21.8

643 291.2 18.3 643 291.0 18.5 641 290.8 18.7 640 290.2 19.3 641 289.1 20.4 642 290.7 21.0 641 290.2 21.5 640 289.2 22.3

kg mm-1

35.2 kg mm-1

35.1 kg mm-1

34.6 kg mm-1

33.7 kg mm-1

32.3 kg mm-1

31.4 kg mm-1

30.1 kg mm-1

29.0

Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure Camber Pressure

0° 20 psi 0.5° 20 psi 1° 20 psi 1.5° 20 psi 2° 20 psi 2.5° 20 psi 3° 20 psi 3.5° 20 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

0 309.3 0.2 0 309.3 0.2 0 309.5 0.0 1 309.5 0.0 -1 309.1 0.4 0 311.8 -0.1 -1 311.9 -0.2 1 311.3 0.1

33 308.3 1.2 35 308.3 1.2 34 308.3 1.2 35 308.1 1.4 32 307.9 1.6 34 309.8 1.9 34 309.7 2.0 33 309.8 1.7

57 307.5 2.0 58 307.5 2.0 59 307.4 2.1 57 307.6 1.9 59 306.7 2.8 57 308.6 3.1 58 308.5 3.2 57 308.5 3.0

86 306.5 3.0 85 306.4 3.1 84 306.4 3.1 83 306.0 3.5 83 305.3 4.2 83 307.2 4.4 86 307.6 4.1 83 307.3 4.2

113 305.5 4.0 112 305.3 4.2 115 305.2 4.3 114 304.8 4.7 114 304.2 5.3 113 306.3 5.4 112 306.1 5.6 114 306.2 5.3

141 304.5 5.0 140 304.7 4.8 142 304.6 4.9 140 304.0 5.5 141 303.3 6.2 140 305.1 6.6 142 304.9 6.8 140 304.5 7.0

167 303.7 5.8 167 303.9 5.6 167 303.7 5.8 167 303.6 5.9 167 302.5 7.0 167 304.3 7.4 168 304.1 7.6 167 303.5 7.9

181 303.1 6.4 181 303.3 6.2 181 303.3 6.2 180 302.5 7.0 180 301.6 7.9 181 303.1 8.6 182 303.2 8.5 182 302.9 8.6

206 302.2 7.3 207 302.3 7.2 206 302.1 7.4 208 301.7 7.8 206 301.0 8.5 206 302.5 9.2 207 302.4 9.3 206 301.7 9.8

233 301.6 7.9 233 301.6 7.9 232 301.4 8.1 231 300.9 8.6 233 300.0 9.5 231 301.9 9.8 232 301.6 10.1 232 300.6 10.9

260 301.1 8.4 261 301.2 8.3 259 301.0 8.5 259 300.4 9.1 260 299.5 10.0 259 301.0 10.7 259 300.6 11.1 260 299.9 11.5

277 300.2 9.3 279 300.0 9.5 279 299.8 9.7 278 299.3 10.2 279 298.6 10.9 279 300.1 11.6 278 299.8 11.9 279 299.0 12.4

305 299.5 10.0 304 299.4 10.1 304 299.3 10.2 305 298.7 10.8 305 297.8 11.7 304 299.4 12.3 303 298.9 12.8 304 298.1 13.4

330 298.6 10.9 330 298.6 10.9 329 298.4 11.1 329 297.8 11.7 331 296.9 12.6 332 298.5 13.2 330 298.0 13.7 328 297.1 14.4

355 298.0 11.5 356 298.1 11.4 353 297.9 11.6 355 297.2 12.3 355 296.2 13.3 356 297.9 13.8 355 297.3 14.4 355 296.4 15.0

375 297.6 11.9 374 297.5 12.0 375 297.3 12.2 376 296.9 12.6 374 295.7 13.8 375 297.2 14.5 376 296.6 15.1 375 295.8 15.6

400 296.5 13.0 399 296.5 13.0 399 296.1 13.4 399 295.8 13.7 400 294.8 14.7 399 296.3 15.4 399 295.7 15.9 399 295.1 16.4

423 296.0 13.5 426 295.7 13.8 425 295.6 13.9 426 295.0 14.5 424 294.1 15.4 423 295.5 16.2 423 295.0 16.7 425 294.2 17.2

450 295.5 14.0 450 295.2 14.3 451 295.0 14.5 450 294.4 15.1 450 293.5 16.0 449 295.0 16.7 450 294.4 17.3 451 293.5 17.9

465 294.9 14.6 468 294.6 14.9 465 294.4 15.1 465 293.8 15.7 466 292.9 16.6 464 294.4 17.3 465 293.8 17.8 464 292.9 18.6

490 294.2 15.3 491 294.2 15.3 490 293.7 15.8 490 293.2 16.3 491 292.4 17.1 490 293.8 17.9 491 293.1 18.6 491 292.4 19.1

516 293.4 16.1 516 293.2 16.3 515 292.9 16.6 516 292.3 17.2 517 291.3 18.2 516 292.7 19.0 515 292.2 19.5 516 291.3 20.1

540 292.6 16.9 539 292.4 17.1 539 292.0 17.5 539 291.6 17.9 539 290.6 18.9 540 292.2 19.4 537 291.6 20.1 538 290.6 20.9

569 292.0 17.5 570 291.7 17.8 567 291.5 18.0 568 290.9 18.6 567 289.9 19.6 567 291.4 20.3 568 291.1 20.6 569 289.9 21.6

594 291.3 18.2 594 291.0 18.5 592 290.8 18.7 593 290.2 19.3 594 289.4 20.1 592 290.8 20.9 593 290.1 21.5 593 289.3 22.2

618 290.6 18.9 618 290.2 19.3 619 290.3 19.2 618 289.5 20.0 618 288.5 21.0 617 290.1 21.6 617 289.4 22.3 619 288.4 23.1

642 290.0 19.5 642 289.5 20.0 640 289.3 20.2 640 289.0 20.5 641 287.7 21.8 641 289.3 22.4 642 288.5 23.2 641 287.7 23.8

kg mm-1

33.3 kg mm-1

32.6 kg mm-1

32.1 kg mm-1

31.5 kg mm-1

30.8 kg mm-1

29.6 kg mm-1

28.6 kg mm-1

27.5

1 kg/mm = 55.9 lb/in

CONFIDENTIAL, PROPRIETARY AND / OR TRADE SECRET INFORMATION.

The information contained in this document is intended only for the use of the individual to whom it was sent and may contain confidential, proprietary and / or trade secret information that is the property of Cooper Tire and Rubber Company and / or Cooper-Avon Tyres Limited. If the reader of this

document is not the intended recipient, you are hereby notified that you should not read any further, and any dissemination, distribution or copying of this communication is strictly prohibited. Copyright © Unpublished.

Page 10: Formula Atlantic Spring Rate Data
Page 11: Formula Atlantic Spring Rate Data

CONFIDENTIAL, PROPRIETARY AND / OR TRADE SECRET INFORMATION.

The information contained in this document is intended only for the use of the individual to whom it was sent and may contain confidential, proprietary and / or trade secret information that is the property of Cooper Tire and Rubber Company and / or Cooper-Avon Tyres Limited. If the reader of this

document is not the intended recipient, you are hereby notified that you should not read any further, and any dissemination, distribution or copying of this communication is strictly prohibited. Copyright © Unpublished.

Page 12: Formula Atlantic Spring Rate Data

Atlantic Rear 13090330/620R15

Unloaded dia on 14J x 15 rim:- 619 mm

Readings taken from drum 1/300 mile circumference

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 0 kph 22 psi 0.5° 0 kph 22 psi 1° 0 kph 22 psi 1.5° 0 kph 22 psi 2° 0 kph 22 psi 2.5° 0 kph 22 psi 3° 0 kph 22 psi 3.5° 0 kph 22 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

0 309.5 0.0 0 309.5 0.0 -2 309.5 0.0 1 309.5 0.0 0 309.5 0.0 0 310.5 0.0 -1 311.3 0.0 -2 311.6 0.0

34 307.9 1.6 34 308.0 1.5 34 308.0 1.5 35 308.0 1.5 35 308.1 1.4 32 309.5 1.1 34 309.8 1.6 35 309.8 1.9

57 307.0 2.5 57 307.1 2.4 57 307.0 2.5 57 307.0 2.5 58 307.1 2.4 57 307.9 2.7 57 308.9 2.4 58 309.0 2.7

82 306.3 3.2 84 306.5 3.0 83 306.5 3.0 84 306.2 3.3 83 305.9 3.6 84 307.0 3.6 82 307.6 3.8 83 307.5 4.1

114 305.4 4.1 113 305.6 3.9 113 305.3 4.2 113 305.2 4.3 112 305.0 4.5 113 306.0 4.5 114 306.3 5.1 111 306.2 5.5

141 304.5 5.0 141 304.4 5.1 140 304.2 5.3 139 304.1 5.4 141 303.7 5.8 139 304.7 5.8 139 305.2 6.2 138 305.0 6.7

168 303.8 5.7 166 303.8 5.7 166 303.5 6.0 167 303.2 6.3 167 302.8 6.7 167 303.8 6.8 167 304.1 7.2 167 303.8 7.8

180 303.2 6.3 181 303.4 6.1 182 303.0 6.5 179 302.8 6.7 181 302.3 7.2 182 303.1 7.4 181 303.1 8.2 182 303.4 8.3

207 302.5 7.0 207 302.6 6.9 207 302.3 7.2 206 302.0 7.5 207 301.6 7.9 206 302.3 8.2 206 302.4 8.9 206 302.2 9.5

232 301.4 8.1 230 301.4 8.1 232 301.3 8.2 232 300.9 8.6 232 300.3 9.2 232 301.0 9.6 233 301.0 10.3 233 301.1 10.5

260 300.8 8.7 260 300.8 8.7 259 300.4 9.1 259 300.0 9.5 259 299.5 10.0 258 300.2 10.4 259 300.2 11.2 259 300.0 11.6

278 299.9 9.6 278 299.8 9.7 277 299.6 9.9 280 299.3 10.2 279 298.6 10.9 279 299.4 11.2 277 299.3 12.0 278 298.9 12.7

304 299.3 10.2 304 299.3 10.2 303 299.0 10.5 304 298.6 10.9 301 297.9 11.6 302 298.6 12.0 304 298.6 12.7 305 298.1 13.5

329 298.5 11.0 328 298.4 11.1 329 297.8 11.7 330 297.5 12.0 328 296.9 12.6 329 297.5 13.1 330 297.4 13.9 331 296.9 14.8

355 297.6 11.9 354 297.6 11.9 353 297.3 12.2 356 296.8 12.7 355 296.1 13.4 355 296.8 13.8 355 296.6 14.8 355 296.1 15.5

376 296.8 12.7 375 296.6 12.9 376 296.4 13.1 376 296.1 13.4 374 295.5 14.0 375 296.0 14.5 375 295.6 15.7 374 295.2 16.4

401 296.1 13.4 400 295.9 13.6 398 295.7 13.8 400 295.4 14.1 398 294.8 14.7 399 295.4 15.2 399 295.1 16.3 400 294.7 16.9

424 295.3 14.2 424 295.2 14.3 424 294.8 14.7 424 294.5 15.0 425 293.6 15.9 424 294.2 16.3 425 294.1 17.3 424 293.3 18.3

449 294.8 14.7 451 294.4 15.1 451 294.1 15.4 450 293.7 15.8 449 293.1 16.4 449 293.6 16.9 449 293.4 18.0 449 292.7 18.9

465 294.1 15.4 462 293.8 15.7 466 293.2 16.3 467 293.0 16.5 466 292.1 17.4 464 292.7 17.9 467 292.4 18.9 466 291.9 19.7

491 293.1 16.4 489 292.8 16.7 490 292.4 17.1 492 292.0 17.5 490 291.6 17.9 490 292.2 18.4 490 291.9 19.5 489 291.3 20.4

517 292.4 17.1 514 292.3 17.2 517 291.9 17.6 516 291.4 18.1 516 291.0 18.5 513 291.3 19.3 514 290.8 20.5 517 290.2 21.5

540 291.5 18.0 540 291.0 18.5 540 290.7 18.8 539 290.4 19.1 539 289.7 19.8 540 290.1 20.4 538 289.8 21.6 539 289.2 22.4

567 290.6 18.9 568 290.2 19.3 569 289.9 19.6 569 289.4 20.1 569 288.7 20.8 568 289.2 21.3 568 289.3 22.1 568 288.4 23.2

592 289.6 19.9 593 289.3 20.2 591 289.1 20.4 593 288.7 20.8 594 288.3 21.2 592 288.6 21.9 593 288.3 23.0 593 287.7 23.9

617 288.8 20.7 618 288.8 20.7 618 288.5 21.0 618 288.2 21.3 618 287.3 22.2 617 287.7 22.9 619 287.2 24.1 618 286.6 25.1

642 288.2 21.3 641 288.1 21.4 642 287.7 21.8 642 287.2 22.3 641 286.3 23.2 640 286.8 23.7 640 286.6 24.7 642 285.9 25.8

kg mm-1

30.6 kg mm-1

30.0 kg mm-1

29.7 kg mm-1

29.1 kg mm-1

28.2 kg mm-1

27.2 kg mm-1

26.0 kg mm-1

25.1

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 50 kph 22 psi 0.5° 50 kph 22 psi 1° 50 kph 22 psi 1.5° 50 kph 22 psi 2° 50 kph 22 psi 2.5° 50 kph 22 psi 3° 50 kph 22 psi 3.5° 50 kph 22 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

1 309.5 0.0 1 309.5 0.0 -2 309.5 0.0 0 309.5 0.0 -1 309.5 0.0 -1 311.4 0.0 0 311.6 0.0 1 310.7 0.0

34 308.1 1.4 35 308.4 1.1 34 308.3 1.2 33 308.2 1.3 34 307.7 1.8 35 309.7 1.7 32 310.1 1.5 34 309.3 1.4

58 307.2 2.3 57 307.3 2.2 58 307.1 2.4 57 307.0 2.5 57 306.6 2.9 56 308.7 2.7 57 308.5 3.1 57 308.1 2.6

85 306.4 3.1 85 306.5 3.0 84 306.2 3.3 84 306.0 3.5 83 305.4 4.1 83 307.4 4.0 84 307.5 4.1 83 306.9 3.8

113 305.7 3.8 114 305.8 3.7 114 305.5 4.0 112 305.2 4.3 112 304.4 5.1 113 306.4 5.0 114 306.3 5.3 115 305.5 5.3

141 305.2 4.3 141 305.2 4.3 140 304.8 4.7 142 304.4 5.1 143 303.6 5.9 141 305.3 6.1 140 305.3 6.4 143 304.4 6.3

167 304.6 4.9 168 304.5 5.0 165 304.0 5.5 168 304.1 5.4 166 302.8 6.7 168 304.9 6.5 167 304.5 7.2 168 303.8 6.9

181 303.9 5.6 180 303.8 5.7 180 304.0 5.5 180 302.8 6.7 180 301.9 7.6 180 303.9 7.5 180 303.4 8.3 181 302.9 7.8

206 303.2 6.3 207 303.0 6.5 207 302.7 6.8 207 302.3 7.2 209 301.0 8.5 208 303.2 8.2 207 302.9 8.8 208 301.8 8.9

233 302.5 7.0 234 302.4 7.1 232 302.0 7.5 230 301.5 8.0 232 299.9 9.6 232 302.0 9.4 234 301.6 10.0 232 300.5 10.2

259 302.1 7.4 261 301.7 7.8 258 301.6 7.9 258 300.9 8.6 261 299.5 10.0 258 301.4 10.0 260 301.1 10.6 260 299.9 10.8

278 301.6 7.9 278 301.2 8.3 279 300.7 8.8 278 300.0 9.5 278 298.3 11.2 279 300.3 11.1 278 299.8 11.9 279 298.7 12.0

304 300.5 9.0 305 300.4 9.1 303 299.9 9.6 304 299.2 10.3 305 297.7 11.8 305 299.4 12.0 306 298.8 12.8 304 297.6 13.1

329 299.7 9.8 330 299.5 10.0 329 299.1 10.4 330 298.3 11.2 328 296.8 12.7 330 298.7 12.7 329 297.9 13.8 328 296.7 14.0

356 299.1 10.4 356 298.8 10.7 356 298.5 11.0 355 297.7 11.8 356 296.2 13.3 353 298.1 13.3 353 297.5 14.2 356 296.1 14.7

373 298.6 10.9 376 298.4 11.1 375 297.9 11.6 374 296.9 12.6 376 295.0 14.5 374 297.1 14.3 373 296.3 15.4 378 294.9 15.9

400 297.8 11.7 400 297.3 12.2 400 296.8 12.7 400 296.1 13.4 399 294.2 15.3 400 295.9 15.5 400 295.5 16.2 400 293.9 16.8

424 296.9 12.6 424 296.5 13.0 424 296.0 13.5 424 295.0 14.5 426 293.3 16.2 422 295.4 16.0 425 294.6 17.0 426 293.1 17.7

450 296.3 13.2 449 296.0 13.5 449 295.4 14.1 448 294.7 14.8 451 293.2 16.3 448 294.8 16.6 449 293.9 17.7 449 292.7 18.0

466 295.4 14.1 467 295.2 14.3 466 294.6 14.9 466 294.1 15.4 466 292.3 17.2 465 293.9 17.5 466 293.6 18.1 465 291.6 19.2

491 295.0 14.5 491 294.5 15.0 492 293.9 15.6 491 293.1 16.4 491 291.2 18.3 491 293.1 18.3 490 292.3 19.4 490 290.6 20.1

514 294.3 15.2 517 293.6 15.9 516 293.1 16.4 516 292.1 17.4 515 290.3 19.2 515 292.2 19.3 515 291.4 20.3 515 289.8 20.9

540 293.1 16.4 540 292.6 16.9 539 291.9 17.6 538 291.2 18.3 539 289.4 20.1 538 291.4 20.0 538 290.5 21.1 539 289.0 21.7

568 292.2 17.3 569 291.9 17.6 568 291.3 18.2 567 290.5 19.0 568 288.5 21.0 569 290.5 20.9 570 289.4 22.3 568 287.8 22.9

592 291.5 18.0 593 291.2 18.3 592 290.3 19.2 592 289.2 20.3 593 287.6 21.9 592 289.5 21.9 594 288.5 23.1 597 287.1 23.7

616 290.6 18.9 619 290.1 19.4 618 289.7 19.8 618 288.5 21.0 618 286.6 22.9 618 288.6 22.8 619 287.8 23.9 618 286.1 24.6

641 289.7 19.8 641 289.4 20.1 641 288.7 20.8 641 288.0 21.5 640 286.0 23.5 640 287.9 23.5 646 287.3 24.4 641 285.5 25.3

kg mm-1

33.4 kg mm-1

32.4 kg mm-1

31.5 kg mm-1

30.2 kg mm-1

28.0 kg mm-1

27.9 kg mm-1

26.7 kg mm-1

25.3

Page 13: Formula Atlantic Spring Rate Data

Atlantic Rear 13090330/620R15

Unloaded dia on 14J x 15 rim:- 619 mm

Readings taken from drum 1/300 mile circumference

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 80 kph 22 psi 0.5° 80 kph 22 psi 1° 80 kph 22 psi 1.5° 80 kph 22 psi 2° 80 kph 22 psi 2.5° 80 kph 22 psi 3° 80 kph 22 psi 3.5° 80 kph 22 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

0 309.5 0.0 -1 309.5 0.0 1 309.5 0.0 -1 309.5 0.0 -1 309.5 0.0 -1 311.3 0.0 -1 311.4 0.0 0 311.7 0.0

34 308.4 1.1 36 308.3 1.2 36 308.2 1.3 33 308.0 1.5 34 307.8 1.7 34 309.6 1.7 33 309.7 1.7 33 310.1 1.6

59 307.2 2.3 57 307.2 2.3 59 306.7 2.8 59 306.9 2.6 57 306.7 2.8 58 308.3 3.0 59 308.3 3.1 58 308.6 3.0

85 306.4 3.1 85 306.5 3.0 83 306.0 3.5 85 306.0 3.5 83 305.7 3.8 84 307.2 4.2 84 307.2 4.2 84 307.5 4.2

113 305.8 3.7 112 305.8 3.7 114 305.3 4.2 114 304.9 4.6 113 304.6 4.9 113 306.0 5.3 113 306.1 5.3 116 306.0 5.6

140 305.0 4.5 141 305.0 4.5 141 304.5 5.0 141 304.2 5.3 141 303.9 5.6 141 305.1 6.2 142 304.8 6.6 142 304.9 6.8

168 304.4 5.1 168 304.5 5.0 166 304.0 5.5 166 303.6 5.9 166 303.2 6.3 168 304.4 6.9 168 304.1 7.3 164 304.1 7.6

182 303.7 5.8 181 303.7 5.8 180 303.2 6.3 181 302.7 6.8 180 302.3 7.2 180 303.5 7.9 184 303.3 8.1 181 303.4 8.3

205 302.9 6.6 207 302.9 6.6 205 302.3 7.2 208 301.8 7.7 206 301.5 8.0 205 302.6 8.7 208 302.2 9.2 206 302.3 9.4

235 302.2 7.3 231 302.4 7.1 234 301.5 8.0 232 301.3 8.2 231 300.7 8.8 233 301.5 9.8 234 301.4 10.0 232 301.1 10.6

260 301.8 7.7 259 301.8 7.7 259 301.3 8.2 258 300.7 8.8 258 300.0 9.5 260 301.2 10.1 259 300.5 10.9 259 300.3 11.3

277 300.9 8.6 278 301.2 8.3 277 300.3 9.2 277 299.6 9.9 279 298.9 10.6 278 300.0 11.3 278 299.3 12.1 278 299.1 12.6

304 300.1 9.4 302 300.2 9.3 304 299.4 10.1 305 298.9 10.6 306 298.2 11.3 303 299.1 12.3 304 298.5 12.9 303 298.2 13.4

329 299.3 10.2 330 299.2 10.3 330 298.6 10.9 331 297.9 11.6 331 297.3 12.2 330 298.3 13.0 330 297.6 13.8 330 297.2 14.5

355 298.8 10.7 354 298.7 10.8 357 298.0 11.5 355 297.5 12.0 355 296.8 12.7 355 297.7 13.7 356 296.9 14.5 355 296.6 15.1

375 298.1 11.4 374 298.1 11.4 372 297.2 12.3 376 296.3 13.2 377 295.8 13.7 375 296.6 14.7 372 295.8 15.6 374 295.4 16.3

399 297.1 12.4 399 297.0 12.5 399 296.2 13.3 400 295.7 13.8 399 295.0 14.5 400 295.8 15.5 400 294.9 16.5 400 294.5 17.2

425 296.3 13.2 424 296.3 13.2 425 295.4 14.1 426 294.7 14.8 425 294.0 15.5 423 294.9 16.4 424 294.2 17.2 426 293.6 18.1

450 295.7 13.8 450 295.7 13.8 450 294.8 14.7 451 294.2 15.3 450 293.5 16.0 448 294.4 16.9 451 293.6 17.8 450 293.0 18.7

466 294.7 14.8 465 294.9 14.6 466 294.3 15.2 464 293.5 16.0 464 292.7 16.8 465 293.6 17.7 465 292.6 18.8 465 292.2 19.5

490 294.1 15.4 490 293.9 15.6 491 293.3 16.2 492 292.4 17.1 492 291.8 17.7 491 292.6 18.7 492 291.8 19.6 491 291.3 20.4

515 293.2 16.3 515 293.5 16.0 515 292.5 17.0 517 291.7 17.8 514 290.9 18.6 515 291.7 19.6 517 290.8 20.6 515 290.4 21.3

540 292.3 17.2 539 292.2 17.3 540 291.4 18.1 539 290.7 18.8 542 290.1 19.4 540 290.9 20.4 540 290.1 21.3 539 289.4 22.2

568 291.5 18.0 568 291.3 18.2 567 290.8 18.7 567 290.3 19.2 567 289.1 20.4 568 290.0 21.3 569 289.0 22.4 569 288.3 23.3

594 290.7 18.8 593 290.8 18.7 594 289.7 19.8 594 289.0 20.5 592 288.2 21.3 591 289.1 22.2 593 288.1 23.3 592 287.5 24.1

618 289.8 19.7 619 289.8 19.7 618 289.0 20.5 617 288.1 21.4 618 287.3 22.2 618 288.0 23.3 618 287.4 24.0 619 286.7 25.0

643 289.1 20.4 641 289.0 20.5 641 288.2 21.3 641 287.5 22.0 640 286.8 22.7 642 287.6 23.7 640 286.8 24.6 642 286.2 25.5

kg mm-1

31.8 kg mm-1

31.7 kg mm-1

30.8 kg mm-1

29.7 kg mm-1

28.8 kg mm-1

27.6 kg mm-1

26.4 kg mm-1

25.3

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 100 kph 22 psi 0.5° 100 kph 22 psi 1° 100 kph 22 psi 1.5° 100 kph 22 psi 2° 100 kph 22 psi 2.5° 100 kph 22 psi 3° 100 kph 22 psi 3.5° 100 kph 22 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

0 309.7 -0.2 -1 309.7 -0.2 0 310.0 -0.5 0 309.6 -0.1 -1 310.0 -0.5 -1 311.4 -0.1 -1 311.6 -0.2 0 311.9 -0.2

34 308.6 0.9 34 308.6 0.9 33 308.6 0.9 36 308.2 1.3 34 308.0 1.5 34 309.5 1.8 32 309.8 1.6 35 310.3 1.4

59 307.4 2.1 60 307.2 2.3 57 307.0 2.5 59 306.9 2.6 57 307.1 2.4 57 308.3 3.0 57 308.4 3.0 57 308.7 3.0

83 306.5 3.0 86 306.3 3.2 85 306.5 3.0 84 306.0 3.5 85 305.8 3.7 85 307.0 4.3 83 307.5 3.9 85 307.4 4.3

113 306.0 3.5 115 305.8 3.7 112 305.3 4.2 113 304.9 4.6 113 304.7 4.8 115 306.0 5.3 114 306.1 5.3 114 306.2 5.5

143 305.3 4.2 143 305.2 4.3 143 304.7 4.8 144 304.2 5.3 140 303.8 5.7 140 304.9 6.4 141 305.0 6.4 142 304.9 6.7

170 304.5 5.0 170 304.5 5.0 169 303.9 5.6 167 304.1 5.4 167 302.9 6.6 169 304.4 7.0 168 304.1 7.2 167 304.4 7.3

180 303.8 5.7 183 303.7 5.8 180 303.2 6.3 182 302.9 6.6 182 302.3 7.2 182 303.4 8.0 183 303.4 8.0 181 303.5 8.2

205 303.1 6.4 206 303.0 6.5 206 302.5 7.0 208 302.0 7.5 206 301.4 8.1 206 302.3 9.0 207 302.3 9.1 207 302.4 9.3

233 302.4 7.1 232 302.2 7.3 234 301.8 7.7 232 301.1 8.4 232 300.4 9.1 233 301.5 9.8 232 301.4 10.0 232 301.2 10.4

260 301.9 7.6 260 301.8 7.7 261 301.1 8.4 257 300.6 8.9 258 300.1 9.4 257 301.1 10.2 260 300.6 10.8 259 300.3 11.4

282 301.2 8.3 279 301.0 8.5 279 300.6 8.9 279 299.9 9.6 278 299.0 10.5 279 299.8 11.5 280 299.5 11.9 279 299.3 12.4

303 300.5 9.0 303 300.2 9.3 305 299.4 10.1 304 299.0 10.5 304 298.3 11.2 306 298.9 12.4 305 298.4 13.0 305 298.1 13.6

331 299.2 10.3 331 299.2 10.3 330 298.5 11.0 329 298.0 11.5 329 297.4 12.1 330 298.0 13.3 329 297.6 13.8 328 297.2 14.5

357 298.9 10.6 355 298.7 10.8 355 298.0 11.5 356 297.5 12.0 355 296.8 12.7 355 297.5 13.8 355 297.0 14.4 353 296.8 14.9

375 298.4 11.1 373 298.1 11.4 375 297.4 12.1 374 296.6 12.9 375 296.2 13.3 377 296.4 14.9 375 295.8 15.6 376 295.6 16.1

401 297.5 12.0 400 297.0 12.5 400 296.1 13.4 399 295.9 13.6 398 295.0 14.5 401 295.6 15.8 400 295.0 16.3 399 294.4 17.2

424 296.3 13.2 425 296.5 13.0 426 295.3 14.2 424 294.6 14.9 424 294.2 15.3 425 294.8 16.5 425 294.0 17.4 426 293.6 18.1

449 296.0 13.5 450 295.6 13.9 450 295.0 14.5 450 294.4 15.1 450 293.5 16.0 450 294.3 17.0 449 293.7 17.7 450 293.0 18.7

466 295.3 14.2 466 295.0 14.5 467 294.3 15.2 468 293.6 15.9 466 292.8 16.7 465 293.4 17.9 467 292.9 18.5 468 292.0 19.7

491 294.6 14.9 491 294.1 15.4 492 293.5 16.0 491 292.6 16.9 490 291.8 17.7 492 292.5 18.8 489 291.7 19.7 490 291.3 20.4

517 293.6 15.9 518 293.3 16.2 518 292.6 16.9 514 291.9 17.6 515 290.8 18.7 515 291.6 19.7 516 290.9 20.5 515 290.3 21.3

539 292.5 17.0 540 292.2 17.3 539 291.5 18.0 539 290.9 18.6 539 290.1 19.4 540 290.8 20.5 539 290.1 21.3 541 289.4 22.3

568 291.9 17.6 568 291.5 18.0 568 290.8 18.7 569 290.2 19.3 568 289.2 20.3 567 289.7 21.6 568 288.9 22.5 568 288.4 23.3

593 291.2 18.3 593 290.7 18.8 593 290.2 19.3 594 289.1 20.4 594 288.4 21.1 598 288.5 22.8 593 288.0 23.4 593 287.4 24.3

615 290.1 19.4 619 289.8 19.7 620 289.1 20.4 619 288.2 21.3 618 287.3 22.2 618 287.9 23.4 617 287.4 24.0 619 286.7 24.9

641 289.6 19.9 641 289.0 20.5 642 288.2 21.3 642 287.5 22.0 642 286.7 22.8 641 287.5 23.8 641 286.8 24.6 642 286.1 25.6

kg mm-1

32.3 kg mm-1

31.5 kg mm-1

30.6 kg mm-1

29.7 kg mm-1

28.6 kg mm-1

27.5 kg mm-1

26.2 kg mm-1

25.0

Page 14: Formula Atlantic Spring Rate Data

Atlantic Rear 13090330/620R15

Unloaded dia on 14J x 15 rim:- 619 mm

Readings taken from drum 1/300 mile circumference

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 140 kph 22 psi 0.5° 140 kph 22 psi 1° 140 kph 22 psi 1.5° 140 kph 22 psi 2° 140 kph 22 psi 2.5° 140 kph 22 psi 3° 140 kph 22 psi 3.5° 140 kph 22 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

1 309.4 0.1 5 310.0 -0.5 1 309.8 -0.3 3 310.1 -0.6 2 310.4 -0.9 3 312.0 -0.7 -1 312.3 -0.9 3 312.7 -1.0

39 308.7 0.8 38 308.5 1.0 37 308.3 1.2 38 308.4 1.1 37 308.2 1.3 37 309.9 1.4 38 310.1 1.3 37 310.7 1.0

63 307.2 2.3 60 307.3 2.2 61 307.0 2.5 60 307.2 2.3 60 307.3 2.2 60 308.6 2.7 59 308.9 2.5 61 309.0 2.7

87 306.5 3.0 87 306.6 2.9 88 306.0 3.5 88 305.9 3.6 87 306.1 3.4 86 307.3 4.0 88 307.6 3.8 87 307.7 4.0

116 305.9 3.6 117 305.8 3.7 116 305.4 4.1 115 305.0 4.5 116 305.0 4.5 116 306.2 5.1 116 306.2 5.2 116 306.4 5.3

145 305.2 4.3 143 305.1 4.4 146 304.6 4.9 143 304.3 5.2 143 304.1 5.4 145 305.2 6.1 144 305.0 6.4 143 305.2 6.5

170 304.5 5.0 171 304.5 5.0 170 304.0 5.5 170 303.6 5.9 172 303.4 6.1 170 304.6 6.7 170 304.4 7.0 169 304.4 7.3

183 303.7 5.8 183 303.8 5.7 184 303.1 6.4 184 302.9 6.6 183 302.5 7.0 183 303.8 7.5 184 303.6 7.8 184 303.5 8.2

209 302.8 6.7 210 302.8 6.7 210 302.1 7.4 209 302.1 7.4 208 301.6 7.9 209 302.7 8.6 209 302.6 8.8 208 302.5 9.2

236 302.3 7.2 235 302.3 7.2 236 301.6 7.9 235 301.3 8.2 235 300.8 8.7 234 302.0 9.4 235 301.4 10.0 233 301.2 10.4

263 302.0 7.5 264 301.8 7.7 262 301.2 8.3 262 300.7 8.8 263 300.3 9.2 260 301.2 10.1 262 300.7 10.7 262 300.5 11.1

281 301.0 8.5 280 301.0 8.5 280 300.3 9.2 279 299.9 9.6 282 299.5 10.0 281 300.2 11.1 280 299.6 11.8 279 299.6 12.1

307 300.2 9.3 307 300.0 9.5 308 299.2 10.3 307 298.9 10.6 305 298.4 11.1 306 299.3 12.0 303 298.7 12.7 306 298.2 13.5

333 299.5 10.0 333 299.2 10.3 331 298.5 11.0 333 298.3 11.2 332 297.5 12.0 331 298.3 13.0 331 297.9 13.5 332 297.8 13.9

357 299.0 10.5 358 298.7 10.8 358 298.0 11.5 358 297.6 11.9 356 297.1 12.4 358 297.8 13.5 356 297.2 14.2 358 296.8 14.8

377 298.3 11.2 378 298.0 11.5 378 297.3 12.2 378 296.7 12.8 376 296.2 13.3 375 297.2 14.2 379 296.5 14.9 376 295.6 16.1

401 297.4 12.1 400 296.9 12.6 403 296.3 13.2 401 295.8 13.7 400 295.3 14.2 402 295.9 15.4 402 295.1 16.3 402 294.6 17.0

427 296.4 13.1 426 296.1 13.4 426 295.5 14.0 426 294.9 14.6 428 294.3 15.2 427 295.4 15.9 425 294.4 17.0 426 293.9 17.7

452 295.9 13.6 451 295.5 14.0 453 295.0 14.5 452 294.6 14.9 453 293.8 15.7 451 294.4 16.9 450 293.9 17.5 449 293.3 18.4

469 295.2 14.3 467 294.9 14.6 468 294.3 15.2 467 293.8 15.7 468 293.3 16.2 466 293.9 17.4 468 293.1 18.3 467 292.9 18.8

493 294.4 15.1 492 293.9 15.6 494 293.6 15.9 493 292.8 16.7 494 292.1 17.4 492 292.9 18.5 492 292.1 19.3 491 291.5 20.2

518 293.4 16.1 519 293.1 16.4 518 292.4 17.1 517 292.0 17.5 518 291.3 18.2 517 292.3 19.0 516 291.1 20.3 518 290.6 21.1

542 292.4 17.1 543 292.0 17.5 543 291.5 18.0 541 290.9 18.6 541 290.5 19.0 542 291.1 20.3 540 290.4 21.0 541 289.8 21.9

570 291.7 17.8 570 291.5 18.0 569 290.8 18.7 570 290.4 19.1 569 289.7 19.8 570 290.3 21.0 570 289.6 21.8 572 289.0 22.7

595 291.0 18.5 597 290.6 18.9 595 290.3 19.2 595 289.4 20.1 595 288.5 21.0 594 289.3 22.0 595 288.6 22.8 594 287.9 23.8

621 289.9 19.6 620 289.8 19.7 621 288.8 20.7 621 288.3 21.2 621 287.7 21.8 620 288.5 22.8 622 287.4 24.0 624 287.1 24.6

645 289.0 20.5 645 288.9 20.6 644 287.9 21.6 644 287.6 21.9 643 287.1 22.4 645 287.9 23.4 644 287.2 24.2 644 286.6 25.1

kg mm-1

32.0 kg mm-1

31.2 kg mm-1

30.7 kg mm-1

29.7 kg mm-1

28.6 kg mm-1

27.6 kg mm-1

26.2 kg mm-1

25.1

Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure Camber Speed Pressure

0° 170 kph 22 psi 0.5° 170 kph 22 psi 1° 170 kph 22 psi 1.5° 170 kph 22 psi 2° 170 kph 22 psi 2.5° 170 kph 22 psi 3° 170 kph 22 psi 3.5° 170 kph 22 psi

Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection Load Radius Deflection

/kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm /kg /mm /mm

6 310.5 -1.0 3 310.7 -1.2 2 311.1 -1.6 3 310.9 -1.4 3 311.0 -1.5 2 312.6 -1.3 3 313.1 -1.7 3 313.6 -1.9

39 308.9 0.6 38 309.3 0.2 38 308.8 0.7 37 308.9 0.6 37 308.9 0.6 37 310.2 1.1 36 310.8 0.6 36 311.0 0.7

62 308.0 1.5 61 308.5 1.0 60 308.0 1.5 62 307.6 1.9 61 307.7 1.8 63 309.0 2.3 60 308.9 2.4 61 309.4 2.2

88 306.9 2.6 87 307.2 2.3 88 306.7 2.8 87 306.4 3.1 85 306.5 3.0 86 307.9 3.4 86 308.0 3.4 87 307.9 3.8

117 306.0 3.5 116 306.2 3.3 114 305.6 3.9 116 305.4 4.1 116 305.1 4.4 113 306.4 4.9 114 306.3 5.1 115 306.6 5.0

144 305.4 4.1 142 305.4 4.1 143 305.0 4.5 143 304.5 5.0 142 304.3 5.2 142 305.3 6.0 143 305.2 6.2 145 305.2 6.5

172 304.7 4.8 170 304.7 4.8 168 304.3 5.2 169 303.8 5.7 169 303.4 6.1 168 304.5 6.8 167 304.5 6.9 167 304.2 7.5

184 303.9 5.6 183 304.1 5.4 183 303.6 5.9 182 303.1 6.4 182 302.6 6.9 182 303.8 7.5 182 303.6 7.8 181 303.6 8.0

209 303.3 6.2 210 303.3 6.2 208 302.7 6.8 208 302.3 7.2 208 301.8 7.7 207 302.7 8.6 207 302.6 8.8 207 302.4 9.3

237 302.6 6.9 235 302.5 7.0 234 302.0 7.5 235 301.4 8.1 233 300.9 8.6 232 301.7 9.6 234 301.4 10.0 233 301.4 10.3

262 302.4 7.1 262 302.0 7.5 262 301.5 8.0 261 300.9 8.6 261 300.3 9.2 261 301.2 10.1 259 300.8 10.6 259 300.5 11.2

281 301.6 7.9 281 301.3 8.2 280 301.0 8.5 280 300.2 9.3 280 299.7 9.8 279 300.3 11.0 277 300.0 11.4 278 299.5 12.2

306 300.6 8.9 307 300.5 9.0 306 299.8 9.7 305 299.2 10.3 305 298.5 11.0 306 299.3 12.0 304 298.9 12.5 306 298.5 13.2

332 299.8 9.7 331 299.7 9.8 330 299.1 10.4 329 298.4 11.1 328 297.7 11.8 331 298.7 12.6 330 297.9 13.5 330 297.5 14.2

358 299.1 10.4 356 299.1 10.4 355 298.5 11.0 357 297.8 11.7 356 297.3 12.2 356 297.7 13.6 357 297.2 14.2 356 296.7 15.0

375 298.5 11.0 377 298.6 10.9 376 298.0 11.5 376 297.1 12.4 377 296.3 13.2 375 297.0 14.3 375 296.4 15.0 376 295.7 16.0

402 297.9 11.6 399 297.6 11.9 402 297.2 12.3 401 295.8 13.7 400 295.6 13.9 397 296.3 15.1 400 295.4 16.0 401 294.8 16.9

428 296.8 12.7 427 296.7 12.8 426 296.2 13.3 428 295.1 14.4 424 294.4 15.1 426 295.0 16.3 426 294.5 16.9 426 293.8 17.9

452 296.1 13.4 451 296.0 13.5 452 295.5 14.0 450 294.4 15.1 451 293.9 15.6 449 294.5 16.9 448 293.9 17.5 449 293.3 18.4

466 295.6 13.9 468 295.4 14.1 465 294.8 14.7 466 294.0 15.5 467 293.2 16.3 466 293.9 17.4 467 293.1 18.3 466 292.8 18.9

492 294.9 14.6 491 294.8 14.7 491 294.1 15.4 491 293.3 16.2 491 292.4 17.1 493 292.8 18.6 490 292.1 19.3 490 291.6 20.0

518 293.9 15.6 520 294.0 15.5 516 293.2 16.3 517 292.3 17.2 516 291.3 18.2 515 292.0 19.3 516 291.3 20.1 517 290.7 21.0

541 292.7 16.8 541 292.8 16.7 541 292.2 17.3 541 291.3 18.2 541 290.3 19.2 541 291.1 20.2 541 290.6 20.8 540 290.0 21.7

571 292.1 17.4 570 292.0 17.5 571 291.2 18.3 571 290.4 19.1 569 289.8 19.7 570 290.3 21.0 569 289.6 21.8 571 289.0 22.7

596 291.2 18.3 595 291.3 18.2 594 290.8 18.7 594 289.8 19.7 595 288.9 20.6 593 289.4 21.9 595 288.7 22.7 594 288.1 23.6

622 290.2 19.3 621 290.2 19.3 621 289.5 20.0 620 288.9 20.6 620 287.8 21.7 619 288.6 22.8 618 287.7 23.7 619 287.4 24.3

643 289.5 20.0 645 289.5 20.0 643 288.9 20.6 642 288.2 21.3 643 287.2 22.3 643 287.8 23.5 642 287.3 24.1 643 286.7 25.0

kg mm-1

31.6 kg mm-1

31.3 kg mm-1

30.6 kg mm-1

29.5 kg mm-1

28.2 kg mm-1

27.0 kg mm-1

25.8 kg mm-1

24.8

1 kg/mm = 55.9 lb/in

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