DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following describes the tire grading categories estab-
lished by the National highway Traffic Safety Adminis-
tration. The specific grade rating assigned by the tire's
manufacturer in each category is shown on the sidewall
of the tires on your car.
All Passenger Car Tires Must Conform to Federal Safety
Requirements in Addition to These Grades.
Treadwear
The treadwear grade is a comparative rating based on the
wear rate of the tire when tested under controlled con-
ditions on a specified government test course. For ex-
ample, a tire graded 150 would wear one and a half (1
1/2) times as well on the government course as a tire
graded 100. The relative performance of tires depends
upon the actual conditions of their use, however, and
may depart significantly from the norm due to variations
in driving habits, service practices and differences in road
characteristics and climate.
Traction Grades
The traction grades, from highest to lowest, are AA, A, B,
and C. Those grades represent the tire's ability to stop on
wet pavement as measured under controlled conditions
on specified government test surfaces of asphalt and
concrete. A tire marked C may have poor traction perfor-
mance.
WARNING!
The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not
include acceleration, cornering, hydroplaning, or
peak traction characteristics.
IF YOU NEED CONSUMER ASSISTANCE 305
9
Latches
Hood............................... 76
Lead Free Gasoline...................... 211
Life of Tires........................... 204
Liftgate (Sedan)......................... 26
Liftgate Window Wiper/Washer............ 101
Light Bulbs........................... 272
Lights..............................61,77
Airbag.........................50,61,112
Back-Up............................ 274
Brake Warning....................... 117
Bulb Replacement..................... 273
Cargo ............................... 96
Center Mounted Stop.................. 277
Daytime Running...................... 78
Dimmer Switch, Headlight............... 77
Electronic Stability Program (ESP) Indicator . . 88
Engine Temperature Warning............ 113
Fog ...........................79,116,273
Headlight Switch...................... 78
Headlights........................... 78
High Beam Indicator................... 117
Instrument Cluster..................... 78License............................. 276
Lights On Reminder.................... 79
Low Fuel........................... 112
Malfunction Indicator (Check Engine)...... 114
Map Reading......................... 77
Oil Pressure......................... 112
Rear Fog............................ 119
Seat Belt Reminder.................... 112
Security Alarm (Theft Alarm)............. 25
Theft Alarm (Security Alarm)............ 112
Traction Control....................... 88
Turn Signal...................77,79,116,274
Voltage............................. 112
Warning (Instrument Cluster Description) . . . 111
Loading Vehicle........................ 217
Tires ............................... 194
Locks
Child Protection....................... 18
Door............................... 14
Power Door.......................... 15
Steering Wheel........................ 13
Lubrication, Body....................... 254
Luggage Rack (Roof Rack)................ 102
314 INDEX
