Tire Sidewall Labeling - GMC 2008 Savana Van Owner's Manual

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.
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.
5-54
(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.
(D) Tire Identification Number (TIN)
and numbers following DOT code are the Tire
Identification Number (TIN). The TIN shows the
manufacturer and plant code, tire size, and date the
tire was manufactured. The TIN is molded onto both
sides of the tire, although only one side may have
the date of manufacture.
(E) Tire Ply Material
:
number of plies in the sidewall and under the tread.
(F) Uniform Tire Quality Grading (UTQG)
manufacturers are required to grade tires based on
three performance factors: treadwear, traction, and
temperature resistance. For more information, see
Uniform Tire Quality Grading on page 5-73.
:
The letters
:
The type of cord and
:
Tire