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 depart
significantly 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 onwet 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.
Temperature Grades
The temperature grades are A (the highest), B, and C,
representing the tire’s resistance to the generation of heat
and its ability to dissipate heat, when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure. The
9
IF YOU NEED CONSUMER ASSISTANCE 463
Cargo Light............................ 178
Cargo Load Floor ........................ 181
Cargo Tie-Downs ........................ 181
Cellular Phone ........................ 99,275
Center High Mounted Stop Light ............ 432
Chains, Tire ............................ 338
Changing A Flat Tire ..................... 374
Chart, Tire Sizing ........................ 322
Check Engine Light
(Malfunction Indicator Light) .............203,394
Checking Your Vehicle For Safety ............. 85
Checks, Safety ........................... 85
Child Restraint .......................... 74
Child Restraint Tether Anchors ............... 78
Child Safety Locks ........................ 31
Child Seat .............................. 80
Clean Air Gasoline ....................... 349
Cleaning Wheels ............................. 420 Climate Control
......................... 275
Clock ..................... 218,233,235,238,247
Clutch ............................... 413
Clutch Fluid ........................... 413
Coin Holder ........................... 176
Compact Disc (CD) Maintenance ............. 274
Compact Spare Tire ...................... 333
Connector UCI ................................ 262
Universal Consumer Interface (UCI) ......... 262
Console .............................. 176
Contract, Service ........................ 459
Coolant (Antifreeze) ................... 433,434
Cooler, Beverage ........................ 175
Cooling System ......................... 407
Adding Coolant (Antifreeze) .............. 409
Coolant Level ...................... 408,411
Disposal of Used Coolant ................ 411
Drain, Flush, and Refill .................. 408
468 INDEX
