Different Size Tires And Wheels; Uniform Tire Quality; Grading - Pontiac 2009 Vibe Owner's Manual

9-56 Vehicle Service and Care
Different Size Tires and
Wheels
If you add wheels or tires that are
a different size than your original
equipment wheels and tires, this
may affect the way your vehicle
performs, including its braking,
ride and handling characteristics,
stability, and resistance to rollover.
Additionally, if your vehicle has
electronic systems such as, antilock
brakes, traction control, and
electronic stability control, the
performance of these systems
can be affected.
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CAUTION
If you add different sized
wheels, your vehicle may not
provide an acceptable level of
performance and safety if tires not
recommended for those wheels
are selected. You may increase
the chance that you will crash and
suffer serious injury. Only use GM
specific wheel and tire systems
developed for your vehicle, and
have them properly installed by
a GM certified technician.
See Buying New Tires on page 9-54
and Accessories and Modifications
on page 9-3 for additional
information.

Uniform Tire Quality

Grading

Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum selection width.
For example:
Treadwear 200 Traction AA
Temperature A
The following information relates
to the system developed by the
Unites 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.