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 385
Check Engine Light
(Malfunction Indicator Light)............... 315
Checking Your Vehicle For Safety ............. 71
Checks, Safety ........................... 71
Child Restraint .................... 60,61,66,68
Child Restraint Tether Anchors .............65,66
Child Safety Locks ........................ 28
Clean Air Gasoline ....................... 283
Climate Control ......................... 225
Clock ........................ 185,187,190,199
Cold Weather Operation ................... 239
Compact Disc (CD) Maintenance ............. 224
Compass .............................. 177
Compass Calibration ..................... 177
Compass Variance ....................... 178
Computer, Trip/Travel .................... 171
Connector UCI ................................ 210
Universal Consumer Interface (UCI) ......... 210Console, Overhead
....................... 127
Contract, Service ........................ 381
Coolant Pressure Cap (Radiator Cap) .......... 331
Cooling System ......................... 328
Adding Coolant (Antifreeze) .............. 330
Coolant Capacity ...................... 355
Coolant Level ...................... 328,332
Disposal of Used Coolant ................ 332
Drain, Flush, and Refill .................. 329
Inspection ........................... 332
Points to Remember .................... 332
Pressure Cap ......................... 331
Radiator Cap ......................... 331
Selection of Coolant (Antifreeze) .........329,355
Cruise Light ........................... 164
Cupholders ............................ 143
Customer Assistance ..................... 379
Daytime Running Lights ................... 103
390 INDEX
