Chevrolet 2010 Cobalt Owner's Manual page 332

(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. If your vehicle has
205/55R16 size tires, they meet the GM TPC
Spec rating, but the TPC Spec code has not
been molded onto the tire's sidewall.
(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 (Department of
Transportation) code is the Tire Identification
6-60
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 6 78.
(G) Maximum Cold Inflation Load Limit
The letters
:
Maximum load that can be carried and the
maximum pressure needed to support that load.
I n f o r ma t i o n P r o v i d e d b y :
The type of cord and
:
:
:
Tire