Tire Sidewall Labeling - GMC 2010 Acadia 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 (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.
(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.
Vehicle Care
(D) Tire Identification Number
(TIN) The letters and numbers
:
following the DOT (Department
of Transportation) code is 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
of cord and number of plies in
the sidewall and under the tread.
(F) Uniform Tire Quality
Grading (UTQG) Tire
:
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 10 54 .
10-37
The type
: