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Chevrolet Impala Owner Manual - 2011
Vehicle Care 10-55
Non‐TPC Spec rated tires may
give a low‐pressure warning
that is higher or lower than the
proper warning level you would
get with TPC Spec rated tires.
See Tire Pressure Monitor
System on page 10‑46.
Your vehicle's original
equipment tires are listed on the
Tire and Loading Information
label. See Vehicle Load Limits
on page 9‑12 for more
information about the Tire and
Loading Information label and its
location on your vehicle.
Different Size Tires and
Wheels
If you add wheels or tires that are a
different size than your original
equipment wheels and tires, this
could 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, rollover airbags, traction
control, and electronic stability
control, the performance of these
systems can be affected.
{
WARNING
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 10‑53 and Accessories and
Modifications on page 10‑3 for
additional information.
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.