Buying New Tires
To find out what kind and size of tires you need, look at
the Tire and Loading Information label. For information
about this label and where to find it, see Loading
Your Vehicle on page4-32.
Thetires installed on your vehicle when it was new had a
TirePerformance Criteria Specification (TPC Spec)
numberon each tire’s sidewall. When you get new tires,
GMrecommends that you get tires with that same TPC
Specnumber. That way your vehicle will continue to have
tiresthat are designed to give proper endurance,
handling,speed rating, load range, traction, ride, tire
pressuremonitoring system performance and other
thingsduring normal service on your vehicle. If your tires
havean all-season tread design, the TPC number will be
followedby an “MS” (for mud and snow).
Whenever you replace your tires with those not having
a TPC Spec number, make sure they are the same
size, load range, speed rating and construction
type (bias, bias-belted or radial) as your original tires.
If you replace your vehicle’s tires with those not having a
TPC Spec number, the tire pressure monitoring
system may give an inaccurate low-pressure warning.
Non-TPC Spec tires may give a low-pressure warning
that is higher or lower than the proper warning level you
would get with TPC Spec numbered tires.
{CAUTION:
Mixing tires could cause you to lose control
while driving. If you mix tires of different sizes
(other than those originally installed on your
vehicle) or types (radial and bias-belted tires),
the vehicle may not handle properly, and you
could have a crash. Using tires of different
sizes (other than those originally installed on
your vehicle) may also cause damage to your
vehicle. Be sure to use the correct size and
type tires on all four 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-ply tires with the wheels on your vehicle.
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