Cadillac XTS 2018 Owner's Manual page 267

266 VEHICLE CARE
Passenger (P-Metric) Tire Example
(1) 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.
(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)
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
:
Original
:
following the DOT (Department of
Transportation) 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.
(5) Tire Ply Material
The 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
0 280.
(7) Maximum Cold Inflation
Load Limit
can be carried and the maximum
pressure needed to support
that load.
The type
:
Tire
:
Maximum load that
: