Uniform Tire Quality Grading - GMC 1999 Suburban Owner's Manual

Table of Contents

Advertisement

CAUTION:
Mixing tires could cause you to lose control while
driving. If you mix tires of different sizes or types
-
(radial and bias
belted tires), the vehicle may not
handle properly, and you could have a crash.
Using tires of different sizes may also cause
damage to your vehicle. Be sure to use the same
size and type tires on all wheels.
CAUTION:
-
If you use bias
ply tires on your vehicle, the
wheel rim flanges could develop cracks after
many miles of driving. A tire and/or wheel could
fail suddenly, causing a crash. Use only radial
tires with the wheels on your vehicle.

Uniform Tire Quality Grading

The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance.
(This applies only to vehicles sold in the United States.)
The grades are molded on the sidewalls of most
passenger car tires. The Uniform Tire Quality Grading
system does not apply to deep tread, winter
-
tires, space
saver or temporary use spare tires, tires with
nominal rim diameters of 10 to 12 inches (25 to 30 cm),
or to some limited
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to Federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.
-
ply
-
-
production tires.
yellowblue
type snow
6-47

Advertisement

Table of Contents
loading

This manual is also suitable for:

1999 yukon

Table of Contents