You need a new tire if any of the following statements
are true:
• You can see the indicators at three or more places
around the tire.
• You can see cord or fabric showing through the
tire’s rubber.
• The tread or sidewall is cracked, cut or snagged
deep enough to show cord or fabric.
• The tire has a bump, bulge or split.
• The tire has a puncture, cut or other damage that
can’t be repaired well because of the size or
location of the damage.
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. For examples of these labels and their
location on your vehicle, see Loading Your Vehicle on
page 4-67.
The tires installed on your vehicle when it was new had a
Tire Performance Criteria Specification (TPC Spec)
number on each tire’s sidewall. When you get new tires,
General Motors 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 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).
If you ever 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.
{CAUTION:
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.
5-71
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