Tire Designations - Cadillac CTS-V 2018 Owner's Manual

294 VEHICLE CARE
particular tire's width, height,
aspect ratio, construction type,
and service description. See the
Tire Size illustration later in this
section for more detail.
(2) TPC Spec (Tire Performance
Criteria Specification)
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.
(3) 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.
DOT Tire Date of Manufacture
The last four digits of the TIN
indicate the tire manufactured
date. The first two digits represent
the week (01-52) and the last two
digits, the year. For example, the
third week of the year 2010 would
have a four-digit DOT date
of 0310.
(4) Tire Identification Number
(TIN) The letters and numbers
:
following the DOT code are the
Original 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.
(5) Tire Ply Material
of cord and number of plies in the
sidewall and under the tread.
(6) 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
0 307.
(7) Maximum Cold Inflation
Load Limit
can be carried and the maximum
pressure needed to support
that load.

Tire Designations

Tire Size
The following is an example of a
typical passenger vehicle tire size.
The type
:
(1) Passenger (P-Metric) Tire
The United States version of a
Tire
:
metric tire sizing system. The
letter P as the first character in
the tire size means a passenger
vehicle tire engineered to
standards set by the U.S. Tire and
Rim Association.
Maximum load that
:
: