Page 493 of 516

Call toll free at:
•1–800–890–4038 (U.S.)
• 1–800–387–1143 (Canada)
Or
Visit us on the Worldwide Web at:
• www.techauthority.com
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 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 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 performance.
9
IF YOU NEED CONSUMER ASSISTANCE 491
Page 494 of 516

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 MotorVehicle Safety Standard No. 109. Grades B and A repre-
sent 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.
492 IF YOU NEED CONSUMER ASSISTANCE
Page 505 of 516

Electronic Stability Program (ESP) Indicator.....330
Engine Temperature Warning ...............210
Exterior ...............................99
Fog ................................ .166
Headlights ........................... .163
Headlights On With Wipers ................164
Headlight Switch ...................... .163
High Beam Indicator .....................222
Illuminated Entry ........................21
Instrument Cluster ..................... .163
Interior ............................. .168
License ............................. .470
Lights On Reminder .....................164
Low Fuel ............................ .209
Malfunction Indicator (Check Engine) .........220
Map Reading ......................... .168
Oil Pressure .......................... .210
Passing ............................. .166
Seat Belt Reminder ..................... .209Security Alarm
..........................19
Service .............................. .464
Tire Pressure Monitoring (TPMS) ............218
Traction Control ....................... .330
Turn Signal ............................99
Voltage ............................. .209
Warning (Instrument Cluster Description) ......208
Loading Vehicle ......................... .375
Capacities ........................... .376
Tires ............................... .337
Locks ..................................31
Automatic Door .........................33
Auto Unlock ...........................33
Child Protection .........................34
Door .................................31
Power Door ............................32
Low Tire Pressure System ...................355
Lubrication, Body ........................ .433
Lug Nuts .............................. .394
10
INDEX 503