Tire Sidewall Labeling - Chevrolet 2009 Corvette Owner's Manual

Tire Sidewall Labeling

Useful information about a tire is molded into its
sidewall. The example below shows a typical
passenger (p-metric) tire sidewall.
Passenger (P-Metric) Tire Example
(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.
5-64
(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 5-80.
:
The letters
:
The type of cord and
:
Tire