4

1. Tread

1.1. Normal tread wear

5

1.2. Uneven tread wear (shoulder)

6

1.3. Uneven tread wear (center)

7

1.4. Irregular wear: Abrasion

8

1.5. Spot wear

9

1.6. Tread rubber reversion

10

1.7. Tread seperation

11

1.8. Cuts

12

1.9. Rib undercutting

13

1.10. Chevron cutting

14

1.11. Peeled rib

15

1.12. Bulge on the crown surface (deflated tire)

16

1.13. Groove cracking

17

1.14. Contamination

18

1.15. Open tread-splice

19

1.16. Rib tearing

20

1.17. Cord exposure in tread groove

21

1.18. Impact break

22

1.19. Skid burst

23

1.20. Bulge/blister

24

2. Side

2.1. Sidewall cuts

25

2.2. Sidewall cracking (Circumferential cracks)

26

2.3. Weathering & radial cracking

27

2.4. Casing break up (CBU)

28

2.5. Innerliner wrinkling

29

3. Bead

3.1. Overheating from excessive breaking

30

3.2. Chafer damage

31

3.3. Heat burst