Uniform Tire Quality Grading; Vehicle Care; Uniform Tire Quality- Page 307

2014 Buick Regal Owner Manual

Model Year
2014 Dodge Charger SRT Owner Manual

Table of Contents

In Brief
Seats and Restraints
Instruments and Controls
Driving and Operating
Vehicle Care
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Black plate (59,1)

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-

6081497) - 2014 - CRC 2nd Edition - 11/22/13

Vehicle Care

10-59

may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.

{

Warning

If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
developed for the vehicle, and
have them properly installed by a
GM certified technician.

See

Buying New Tires on

page 10-57

and

Accessories and

Modifications on page 10-3

.

Uniform Tire Quality
Grading

Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example:

Treadwear 200 Traction AA
Temperature A

The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), 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
(UTQG) system does not apply
to deep tread, winter tires,
compact spare tires, tires with

nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production
tires.

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.

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