Post on 19-Jan-2015
description
Helen PetrauskasHelen Petrauskas
Vice PresidentVice PresidentEnvironmental & Safety EngineeringEnvironmental & Safety Engineering
- 3 -
Actions We Have Taken Replaced tires in Middle East (July 1999),
Southeast Asia (Feb 2000), and Venezuela and adjacent countries (May 2000)
At the same time took action to determine if same issue existed in North America» Requested Firestone to check U.S. database and
perform tire testing» Reviewed NHTSA hot line, as well as all internal Ford
databases» With Firestone, undertook study of worn tires from
U.S. Southwest Found no evidence of tread separation
- 4 -
Actions We Have Taken Requested and analyzed data from Firestone Supported Firestone recall decision
- 5 -
Actions We Have Taken The tire industry is increasing production of 15-
inch tires by more than 250,000 tires per month by the end of September
Engaged 3,100 Ford and Lincoln-Mercury dealers to perform tire replacements
Suspended Explorer and Ranger production at three assembly plants: Edison, St. Louis, and Twin Cities
Looking at increased use of 16-inch tires to free up 15-inch tires
- 6 -
Actions We Have Taken Major effort to communicate with customers
» Opened additional call center
» Website
» Series of newspaper ads
Full cooperation and disclosure to NHTSA
Tom BaughmanTom Baughman
Engineering DirectorEngineering DirectorNorth American TruckNorth American Truck
- 8 -
Claims for Firestone Tires by Tire Size
2030
137 82 81 54 52 31 310
500
1000
1500
2000
2500
P235/75R15 31x10.5R15 30x9.50R15 P235/70R16 P265/75R16 33x12R15 P255/70R16 P265/75R15F-SeriesRanger
ExplorerRanger
F-SeriesBronco
ExplorerF-Series
Expedition
ExplorerF-SeriesRanger
F-SeriesBronco
Firestone Property Damage and Injury Claims and Lawsuits Submitted Pursuant to NHTSA InquiryTire Sizes with More Than 30 ClaimsTires with Ford Original Equipment Application Noted
- 9 -
Claims for Firestone P235/75R15 ATX and Wilderness Tires by Type of Claim
1365
7710
412
16659 41 2
64
1864
0
400
800
1200
1600
2000
Total TreadSeparation
Blow Out Other Unknown
ATX
Wilderness
Firestone Claims Data
- 10 -
Tread Separation Claims for Firestone Tires by Tire Size
71 55 19 15 15 14 7 725 51224
1424
0
500
1000
1500
P23
5/75
R15
31x1
0.50
R15
30x9
.50R
15
P
235/
70R
16
33
x12R
15
32x1
1.50
R15
P22
5/75
R15
P26
5/75
R16
P26
5/75
R15
P20
5/75
R15
P22
5/70
R15
P25
5/70
R16
P25
5/85
R16
ExplorerRangerF-SeriesBronco
F-SeriesRanger
F-SeriesRanger
ExplorerF-SeriesExpedition
F-SeriesBronco
Firestone Claims DataTire Sizes with at least 5 Tread Separation ClaimsTires with Ford Original Equipment Application Noted
- 11 -
Tread Separation Claims for Firestone P235/75R15 ATX and Wilderness Tires by State
0
50
100
150
200
250
300
350
400
TX
AZ
CA FL
LA NV
MS
GA
OK
AL TN
UT
NC
AR SC
KS
MO
KY
NM
UN
K IN NY
CO
PA
MN WI
VA IA OR
OH MI
NJ IL ND HI
MA CT
WY
WA
77%
Firestone Claims Data
- 12 -
Tread Separation Claims Rate for Firestone P235/75R15ATX and Wilderness Tires for 1996 Tire Production Year
248
22
0
50
100
150
200
250
300
ATX Wilderness
Cla
ims
Ra
te (
pp
m)
11 X
Firestone Claims and Production Data
- 13 -
Tread Separation Claims Rate for Firestone P235/75R15 Wilderness Tires by Tire Production Year and Plant
34.1
3.31.01.0 0.0 0.0
66.3
6.6
0
10
20
30
40
50
60
70
1996 1997 1998 1999
Tire Production Year
Cla
ims
Ra
te (
pp
m)
Decatur Plant
Other Plants
Firestone Claims and Production Data
- 14 -
Tread Separation Claims Rate for Firestone P235/75R15 ATXby Time in Service at Claim, Tire Production Year, and Plant
0
100
200
300
400
500
600
700
New 1 2 3 4 5 6 7 8 9 New 1 2 3 4 5 6 7 8 9
Time in Service at Claim (in years)
Cla
ims
Ra
te (
pp
m)
1991
1992
1993
1994
1995
1996
1997
1998
1999
Production Year
Decatur Plant Other Plants
Firestone Claims and Production Data
- 15 -
Tread Separation Claims Rate for Firestone P235/75R15 Wildernessby Time in Service at Claim, Tire Production Year, and Plant
0
100
200
300
400
500
600
700
New 1 2 3 4 5 6 7 8 9 New 1 2 3 4 5 6 7 8 9
Time in Service at Claim (in years)
Cla
ims
Ra
te (
pp
m)
1991
1992
1993
1994
1995
1996
1997
1998
1999
Production Year
Decatur Plant Other Plants
Firestone Claims and Production Data
- 16 -
Tread Separation Claims Rate for Firestone P235/75R15 Wildernessby Time in Service at Claim, Tire Production Year, and Plant
0
10
20
30
40
50
60
70
New 1 2 3 4 5 6 7 8 9 New 1 2 3 4 5 6 7 8 9
Time in Service at Claim (in years)
Cla
ims
Ra
te (
pp
m)
1991
1992
1993
1994
1995
1996
1997
1998
1999
Production Year
Decatur Plant Other Plants
Firestone Claims and Production Data
- 17 -
Tread Separation Claims Rate for Firestone 15-inch and 16-inch Tires
Production Years 1995-1999 and Claims Years 1995-1999
14.60.0
18.81.2 2.3
241.3
0
50
100
150
200
250
P235/75R15ATX
P235/75R15Wilderness AT*
P255/70R16Wilderness AT
Cla
ims
Ra
te (
pp
m)
Decatur
Other Plants
* P235/75R15 Wilderness AT 15-inch production began in 1996
- 18 -
Competitive SUVs and Pickup Trucksat 26 psi Recommended Inflation Pressure
On P235/75R15 Tires (same exact size as
Bridgestone/Firestone recall)= 4
On 70 Series P235-15 Tires = 3
On sizes similar to Bridgestone/Firestone
recall tire= 9
16Models
- 19 -
Passenger Car and Light TruckOccupant Fatality Rates
0
1
2
3
4
5
1960s 1970s 1980s 1990s
Passenger Cars
Light Trucks
N/A
Fat
ality
Rat
epe
r 100
Milli
on V
ehicl
e M
iles o
f Tra
vel
Source: Department of Transportation Data
- 20 -
Fatality Rate Comparison
1.6
1.3
Passenger Cars Compact SUVs
Fa
tali
ty R
ate
per
100
Mill
ion
Veh
icle
Mile
s of
Tra
vel
Source: Department of Transportation Data
- 21 -
Fatalities by Crash Mode
Front41%
Side32%
Rollover24%
Rear3%
Passenger Cars Compact SUVs
Front24%
Side10%
Rear2%
Rollover64%
Source: Department of Transportation Data
- 22 -
Ford Internal Safety Guidelines
Frontal and Offset Frontal Impact Resistance to Rollover Occupant Restraints Interior Side Impact Protection Side Intrusion Dynamic Side Impact Rear Impact Roof Crush Resistance ABS Fuel System Performance
- 23 -
Fatality Rate Comparison
1.6
1.3
1.0
PassengerCars
All CompactSUVs
Explorer
Fat
alit
y R
ate
per
100
Mill
ion
Veh
icle
Mile
s of
Tra
vel
Source: Department of Transportation Data
- 24 -
Fatality Rate Comparison
All Accident Types Rollover Accidents
ExplorerOther
CompactSUVs
-28%
-26%
Fat
alit
y R
ate
per 1
00 M
illio
n V
ehic
le M
iles
of T
rave
l
ExplorerOther
CompactSUVs
Source: Department of Transportation Data
- 26 -
Tire Capacity Explorer 4x4 5.0L, P235/75R15 Tire at 26 psi
4,250
5,640
0
1000
2000
3000
4000
5000
6000
7000
8000
Base Curb Weight Max Gross Axle WeightRating
Po
un
ds
pe
r A
xle T&RA Adjusted Load Cap. (6,372 lbs)
T&RA Load Capacity (7,012 lbs)
- 27 -
Load Carrying Capacity by AxleExplorer 4x4 5.0L, P235/75R15 Tire at 26 psi
2,367
1,883
2,850 3,000
0
500
1000
1500
2000
2500
3000
3500
4000
Front Rear Front Rear
Po
un
ds
pe
r A
xle
Base Curb Weight4,250
Max Gross Axle Weight Rating (GAWR)
T&RA Adjusted Load Cap. (3,186 lbs)
T&RA Load Capacity (3,506 lbs)
- 28 -
Explorer Shock Damping
0
500
1000
1500
2000
2500
3000
3500
4000
0 50 100 150 200
Shock Rebound (cycles per minute)
Dam
ping
For
ce (N
)
Base
Australian
WashboardSmooth Roads
- 29 -
Tire Design Tradeoffs
A High speed durability, load capacity, fuel economy traction & seat on rim
B Ride, comfort, noise, vibration & harshness
C Stability & handling
* P235/75 R15
Pressure (psi)
Impl
icat
ions
/ D
esir
abil
ity
C
B
A
Lower
Higher
20 30 35
TRA Range *
26
26 Optimum
acceptable
HigherLower