Tire Sidewall Labeling - GMC 2010 Yukon XL Denali Owner's Manual

20 Inch Tires
If your vehicle has the optional 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 5 12 , for additional information.

Tire Sidewall Labeling

Useful information about a tire is molded into the
sidewall. The following illustration is an example
of a typical P Metric tire sidewall.
6-58
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.