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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 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
on specified government test surfaces of asphalt and
concrete. A tire marked C may have poor traction perfor-
mance.
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IF YOU NEED CONSUMER ASSISTANCE 623
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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 grade C corresponds to a level of performance,
which all passenger car 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.
WARNING!
The temperature grade for this tire is established for
a tire that is properly inflated and not overloaded.
Excessive speed, under-inflation, or excessive load-
ing, either separately or in combination, can cause
heat buildup and possible tire failure.
624 IF YOU NEED CONSUMER ASSISTANCE
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Data Recorder, Event.......................79
Daytime Brightness, Interior Lights .............231
Daytime Running Lights ....................227
Dealer Service ............................550
Defroster, Rear Window .....................292
Defroster, Windshield ..................... .109
Delay (Intermittent) Wipers ..................232
Diagnostic System, Onboard .................547
Dimmer Switch, Headlight ...................230
Dipsticks Automatic Transmission ..................576
Oil (Engine) .......................... .551
Power Steering ........................ .434
Disabled Vehicle Towing ....................539
Disposal Antifreeze (Engine Coolant) ................571
Door Locks Door Locks ............................31
KeyFob...............................31 Remote
...............................31
Remote Keyless Entry (RKE) ................31
Door Locks, Automatic ......................33
Door Opener, Garage .......................256
Driving Through Flowing, Rising, or Shallow Standing
Water ............................... .431
Driving to Achieve Maximum Fuel Economy ......321
DVD Player (Video Entertainment System™) ......350
E-85 Fuel ...............................488
Electrical Outlet, Auxiliary (Power Outlet) ........269
Electrical Power Outlets .....................269
Electric Remote Mirrors .....................121
Electronic Brake Control System ...............439
Anti-Lock Brake System ..................438
Brake Assist System .....................441
Traction Control System ...................442
Electronic Roll Mitigation (ERM) ..............442
630 INDEX
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Illuminated Entry........................21
Instrument Cluster ..................... .225
Intensity Control ........................230
Interior ............................. .230
License ............................. .601
Lights On Reminder .....................227
Low Fuel ............................ .317
Malfunction Indicator (Check Engine) .........302
Map Reading ..........................231
Parade Mode (Daytime Brightness) ...........231
Park ............................... .596
Passing ............................. .230
Reading ............................. .231
Rear Servicing ........................ .598
Rear Tail ............................ .598
Seat Belt Reminder ..................... .307
Security Alarm ........................ .310
Service ...............................594
Service Engine Soon (Malfunction Indicator) . . . .302 Side Marker
.......................... .596
Tire Pressure Monitoring (TPMS) ............305
Traction Control ........................446
Turn Signal ............................111
Vanity Mirror ..........................123
Warning (Instrument Cluster Description) ......302
Load Floor, Cargo ........................ .285
Loading Vehicle ..........................494
Capacities ............................496
Tires ............................... .456
Locks ..................................31
Automatic Door .........................33
Auto Unlock ...........................34
Child Protection .........................34
Door .................................31
Power Door ............................32
Low Tire Pressure System ...................474
Lubrication, Body ........................ .560
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INDEX 637
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Tongue Weight/Trailer Weight................502
To Open Hood .......................... .223
Towing ............................... .496
Behind a Motorhome .....................510
Disabled Vehicle ........................539
Guide ...............................501
Recreational .......................... .510
Weight ...............................501
Towing Vehicle Behind a Motorhome ...........510
Traction ............................... .430
Traction Control ..........................442
Trailer Sway Control (TSC) ..................447
Trailer Towing .......................... .496
Cooling System Tips .....................510
Hitches ............................. .500
Minimum Requirements ..................503
Tips................................ .508
Trailer and Tongue Weight .................502
Wiring ...............................507 Trailer Towing Guide
.......................501
Trailer Weight ............................501
Transaxle Autostick ............................ .427
Transmission Automatic ............................417
Filter ............................... .578
Fluid ............................... .575
Transmitter Battery Service (Remote Keyless Entry) . .25
Transmitter, Garage Door Opener (HomeLink®). . . .256
Transmitter Programming (Remote Keyless Entry) . . .22
Transmitter, Remote Keyless Entry (RKE) .........22
Tread Wear Indicators ..................... .468
Trip Odometer .......................... .304
Turn Signals ............................ .229
UCI Connector .......................... .372
Uconnect® Advanced Phone Connectivity ..............143
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INDEX 645