Chevrolet Express Owner Manual - 2012 - crc - 11/11/11
10-48 Vehicle Care
(E) Tire Ply Material: The type
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 10‑64.
(G) Maximum Cold Inflation
Load Limit
: Maximum load that
can be carried and the
maximum pressure needed to
support that load. For
information on recommended
tire pressure see Tire Pressure
on page 10‑54 and Vehicle Load
Limits on page 9‑10.
Light Truck (LT-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.
(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. This does not apply
to Goodyear LT225/75R16 G949
RSA and Goodyear LT225/
75R16 G933 RSD commercial
truck tires.
(C) Dual Tire Maximum
Load
: Maximum load that can
be carried and the maximum
pressure needed to support that
load when used in a dual
configuration. For information on
recommended tire pressure see
Tire Pressure on page 10‑54
and Vehicle Load Limits on
page 9‑10.
(D) DOT (Department of
Transportation)
: The
Department of Transportation
(DOT) code indicates that the
tire is in compliance with the
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