Different size tires and wheels, Uniform tire quality grading, Different size tires and – GMC 2012 Savana User Manual

Page 334: Wheels -68, Uniform tire quality, Grading -68, Genuine

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GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

10-68

Vehicle Care

The Tire and Loading Information
label indicates the original
equipment tires on the vehicle. See
Vehicle Load Limits on page 9‑10
for the label location and more
information about the Tire and
Loading Information label.

Different Size Tires and
Wheels

If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, and electronic stability
control, the performance of these
systems can also be affected.

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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 10‑66
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,

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