Tire Sidewall Labeling - GMC 2012 Sierra Denali Owner's Manual

10-48 Vehicle Care
20 Inch Tires
If the vehicle has 20 inch
P275/55R20 size tires, they are
classified as touring tires and
are designed for on road use.
The low profile, wide tread
design is not recommended for
off road driving. See Off-Road
Driving on page 9 6, for
additional information.
Notice: Low profile tires are
more susceptible to damage
from road hazards or curb
impact than standard profile
tires. Tire and/or wheel
assembly damage can occur
when coming into contact
with road hazards like,
potholes, or sharp edged
objects, or when sliding into a
curb. The warranty does not
cover this type of damage.
Keep tires set to the correct
inflation pressure and, when
possible, avoid contact with
curbs, potholes, and other
road hazards.

Tire Sidewall Labeling

Useful information about a tire is
molded into the sidewall. The
examples show a typical
passenger and light truck tire
sidewall.
Passenger (P Metric) Tire
(A) Tire Size The tire size
:
code is a combination of letters
and numbers used to define a
particular tire's width, height,
aspect ratio, construction type,
and service description. See the
Tire Size illustration later in this
section for more detail.