
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 vehicle 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 condi-
tions 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 characteristics 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 onspecified government test surfaces of asphalt and concrete.
A tire marked C may have poor traction performance.
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 con-
trolled 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 grade C
corresponds to a level of performance, which all passenger
vehicle tires must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A represent higher
levels of performance on the laboratory test wheel, than the
minimum required by law.
496 SERVICING AND MAINTENANCE

DipsticksOil (Engine) ........................... .448
Disabled Vehicle Towing .....................433
Disposal Antifreeze (Engine Coolant) .................470
Do Not Disturb ........................... .606
Door Ajar ............................... .156
Door Ajar Light ........................... .156
Door Opener, Garage ....................... .109
Driver’s Seat Back Tilt ........................41
Driving ................................. .389
DVD Player (Video Entertainment System) .........571
Economy (Fuel) Mode ...................... .274
Electrical Outlet, Auxiliary (Power Outlet) .........122
Electric Remote Mirrors .......................63
Electronic Brake Control System ................181
Anti-Lock Brake System ....................180
Electronic Roll Mitigation ...................188
Traction Control System ....................184
Electronic Speed Control (Cruise Control) . . .296, 297, 299
Electronic Stability Control (ESC) ...............185
Electronic Throttle Control Warning Light .........155
Emergency, In Case Of Freeing Vehicle When Stuck .................432 Hazard Warning Flasher
...................398
Jacking ............................... .475
Jump Starting .......................... .425
Tow Hooks ............................ .436
Emission Control System Maintenance ............177
Engine .............................. .445, 447
Air Cleaner ............................ .452
Block Heater ........................... .270
Break-In Recommendations .................270
Checking Oil Level ...................... .448
Compartment ....................445, 446, 447
Compartment Identification ..............445, 446
Coolant (Antifreeze) ..................... .512
Cooling .............................. .467
Exhaust
Gas Caution ...................256, 510
Fails To Start ........................... .267
Flooded, Starting ........................ .267
Identification ........................... .447
Jump Starting .......................... .425
Oil ........................... .450, 511, 512
Oil Filler Cap ....................... .445, 451
Oil Filter .............................. .452
Oil Selection ........................ .450, 511
Oil Synthetic ........................... .451
Overheating ........................... .428
12
INDEX 619

Key Fob Programming (Remote Keyless Entry)......24
Key-In Reminder ............................26
Keyless Enter-N-Go ..........................36
Key, Replacement ........................ .24, 32
Keys ....................................20
Lane Change Assist ..........................70
LaneSense ............................... .359
Lap/Shoulder Belts ........................ .215
Latches ................................. .259
Leaks, Fluid ............................. .259
Life Of Tires ............................. .487
Liftgate ............................. .101, 102
Liftgate Window Wiper/Washer .................78
Light Bulbs .............................. .259
Lights .................................. .259
AirBag .........................150, 226, 257
Automatic Headlights ......................67
Brake Assist Warning ..................... .188
Brake Warning ......................... .151
Cargo................................ .106
Cruise ......................... .172, 173, 174
Daytime Running .........................68
Dimmer Switch, Headlight ...................66
Engine Temperature Warning ................153 Exterior
.............................. .259
Hazard Warning Flasher ...................398
Headlights On With Wipers ..................67
Hill Descent Control Indicator ...............190
Low Fuel ............................. .164
Malfunction Indicator (Check Engine) ..........158
Map Reading ............................72
Park ................................. .170
Passing ................................70
Reading ............................ .72, 119
Seat Belt Reminder ...................... .149
Security Alarm ......................... .152
Side Marker ........................... .405
Tire Pressure Monitoring (TPMS) .............161
Traction Control ........................ .188
T
urn Signal ....................66, 171, 259, 405
Vanity Mirror ............................65
Warning (Instrument Cluster Description) . . . .153, 171
Loading Vehicle ........................... .369
Tires................................. .479
Load Shed Battery Saver Mode ...................... .146
Battery Saver On ........................ .146
Electrical Load Reduction ...................146
Intelligent Battery Sensor ...................146
622 INDEX

Quality Grading........................ .496
Radial ............................... .485
Replacement ........................ .424, 488
Rotation .............................. .495
Safety ............................ .475, 483
Snow Tires ............................ .490
Spare Tire ...................... .418, 490, 492
Spinning .............................. .486
Trailer Towing .......................... .378
Tread Wear Indicators .....................486
Wheel Mounting ........................ .424
Tire Safety Information ...................... .475
Tongue Weight/Trailer Weight .................376
Tow Hooks, Emergency ..................... .436
Towing ............................. .370, 433
Disabled Vehicle ........................ .433
Guide ................................ .374
Recreational ........................... .383
Weight ............................... .374
Towing Vehicle Behind A Motorhome ............383
Traction Control .......................... .184
Trailer Sway Control (TSC) ....................189
Trailer Towing ............................ .370
Cooling System Tips ..................... .382
Hitches ............................... .373Minimum Requirements
....................377
Tips ................................. .381
Trailer And Tongue Weight ..................376
Wiring ............................... .379
Trailer Towing Guide ....................... .374
Trailer Weight ............................ .374
Transfer Case ............................ .475
Maintenance ........................... .475
Transmission ............................. .275
Automatic ......................... .275,
472
Maintenance ........................... .472
Shifting .............................. .273
Transmitter, Garage Door Opener (HomeLink) ......109
Transporting Pets ......................... .255
Tread Wear Indicators ...................... .486
Turn Signals .......................... .171, 405
Uconnect Customer Programmable Features .............532
Uconnect Settings ....................... .532
Uconnect 8.4/8.4 NAV ...................... .606
Uconnect Access Vehicle Health Alert ...................... .599
Uconnect Voice Command ....................588
Uniform Tire Quality Grades ..................496
628 INDEX