GMC 2012 Sierra - Manual (Page 455)

Black plate (69,1) GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Vehicle Care 10-69
Spec number is molded onto the
tire's sidewall near the tire size.
If the tires have an all‐season tread
design, the TPC Spec number will
be followed by MS for mud and
snow. See Tire Sidewall Labeling on
page 10‑52 for additional
information.
GM recommends replacing all the
tires at the same time. Uniform
tread depth on all tires will help to
maintain the performance of the
vehicle. Braking and handling
performance may be adversely
affected if all the tires are not
replaced at the same time.
See Tire Inspection on page 10‑65
and Tire Rotation on page 10‑65 for
information on proper tire rotation.
{
WARNING
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
(Continued)
WARNING (Continued)
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{
WARNING
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
vehicle damage. Use the correct
size, brand, and type of tires on
all wheels.
This vehicle may have a different
size spare than the road tires
originally installed on the vehicle.
When new, the vehicle included a
spare tire and wheel assembly
with a similar overall diameter as
the road tires and wheels, so it is
all right to drive on it. The spare
(Continued)
WARNING (Continued)
tire was developed for use on this
vehicle and will not affect vehicle
handling.
{
WARNING
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
A tire and/or wheel could fail
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle.
If the vehicle tires must be replaced
with a tire that does not have a TPC
Spec number, make sure they are
the same size, load range, speed
rating, and construction (radial) as
the original tires.