Tire Sidewall Labeling - Chevrolet 2007 Colorado Owner's Manual

Tire Sidewall Labeling

Useful information about a tire is molded into
its sidewall. The examples below show a typical
passenger vehicle tire and a compact spare
tire sidewall.
Passenger Vehicle Tire Example
378
(A) Tire Size: The tire size 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.
(B) TPC Spec (Tire Performance Criteria
Specification): Original equipment tires designed
to GM's specific tire performance criteria have
a TPC specification code molded onto the sidewall.
GM's TPC specifications meet or exceed all
federal safety guidelines.
(C) DOT (Department of Transportation):
The Department of Transportation (DOT) code
indicates that the tire is in compliance with the
U.S. Department of Transportation Motor Vehicle
Safety Standards.