Buying New Tires - GMC 2004 Yokon Denali Owner's Manual

Buying New Tires

To find out what kind and size of tires you need, look at
the Certification/Tire label or the Tire and Loading
Information label. See Loading Your Vehicle on
page 4-48, for more information about these labels and
where they can be found on your vehicle.
The tires installed on your vehicle when it was new had a
Tire Performance Criteria Specifications (TPC Spec)
number on each tire's sidewall. When you get new tires,
GM recommends that you get tires with that same TPC
Spec number. That way your vehicle will continue to have
tires that are designed to give proper endurance,
handling, speed rating, load range, traction, ride, tire
pressure monitoring system performance and other
things during normal service on your vehicle. If your tires
have an all-season tread design, the TPC number will be
followed by 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.
5-70
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:
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Mixing tires could cause you to lose control
while driving. If you mix tires of different sizes or
types (radial and bias-belted tires), the vehicle
may not handle properly, and you could have a
crash. Using tires of different sizes may also
cause damage to your vehicle. Be sure to use
the same size and type tires on all wheels.
Your vehicle may be equipped with a different
size spare than the road tires (those originally
installed on your vehicle). When new, your
vehicle included a spare tire and wheel assembly
with a similar overall diameter as your vehicle's
road tires and wheels, so it is all right to drive on
it. Because this spare was developed for use on
your vehicle, it will not affect vehicle handling.