DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following tire grading categories were established by
the National Highway Traffic Safety Administration. The
specific grade rating assigned by the tire’s manufacturer
in each category is shown on the sidewall of the tires on
your vehicle.
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
conditions on a specified government test course. For
example, a tire graded 150 would wear one and one-half
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 departsignificantly from the norm due to variations in driving
habits, service practices, and differences in road charac-
teristics and climate.
Traction Grades
The Traction grades, from highest to lowest, are AA, A, B,
and C. These 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.
9
IF YOU NEED CONSUMER ASSISTANCE 387
Low Fuel............................ 172
Malfunction Indicator (Check Engine) ........ 168
Map Reading ......................... 125
Oil Pressure .......................... 173
Rear Servicing ........................ 347
Seat Belt Reminder ..................... 171
Security Alarm (Theft Alarm) ............19,172
Service ............................. 345
Service Engine Soon (Malfunction Indicator) . . . 168
Theft Alarm (Security Alarm) .............. 172
Tire Pressure Monitoring (TPMS) ........165,265
Traction Control ....................... 247
Turn Signal ...................... 73,128,346
Voltage ............................. 169
Warning (Instrument Cluster Description) ..... 164
Loading Vehicle ...................... 276,278
Capacities ........................... 278
Tires ............................... 252 Locks
Child Protection ........................ 30
Door ................................ 27
Power Door ........................... 28
Steering Wheel ......................... 14
Low Tire Pressure System .................. 265
Lubrication, Body ....................... 319
Lumbar Support ........................ 112
Maintenance Free Battery .................. 317
Maintenance, General ..................... 312
Maintenance Procedures ................... 312
Maintenance Schedule Schedule “A”-Non Turbo ................ 368
Schedule “A”-Turbo .................... 373
Schedule “B” ......................... 357
Schedule “B”-All Engines ................ 357
Maintenance Schedules .................... 354
Malfunction Indicator Light (Check Engine) . . 168,309
398 INDEX
Compact Spare........................ 259
General Information .................... 256
High Speed .......................... 259
Inflation Pressures ..................... 257
Jacking ............................. 294
Life of Tires .......................... 262
Load Capacity ..................... 252,253
Pressure Monitor System (TPMS) ........... 265
Pressure Warning Light .................. 165
Quality Grading ....................... 387
Radial .............................. 259
Replacement ......................... 262
Rotation ............................ 264
Safety ........................... 248,256
Sizes ............................... 249
Snow Tires ........................... 264
Spare Tire ........................... 295
Spinning ............................ 260
Tread Wear Indicators ................... 261 Tongue Weight/Trailer Weight
.............. 282
Towing ............................... 278
24-Hour Towing Assistance ................ 96
Disabled Vehicle ....................... 303
Guide .............................. 282
Recreational .......................... 290
Weight .............................. 282
Towing Assistance ........................ 96
Traction .............................. 237
Traction Control ......................... 246
Traction Control Switch ................... 246
Trailer Towing .......................... 278
Cooling System Tips .................... 290
Hitches ............................. 281
Minimum Requirements ................. 283
Trailer and Tongue Weight ............... 282
Wiring .............................. 287
Trailer Towing Guide ..................... 282
Trailer Weight .......................... 282
404 INDEX
