CHEVROLET 2009 Suburban - Manual (Page 462)

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 4-13, for additional information.
Tire Sidewall Labeling
Useful information about a tire is molded into the
sidewall. The following illustrations are examples
of a typical P-Metric and a LT-Metric tire sidewall.
(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.
Passenger (P-Metric) Tire
5-62