Tire Designations - GMC Cadillac CT5 2021 Manual

(4) Tire Identification Number
(TIN) The letters and numbers
:
following the DOT 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
:
of cord and number of plies in the
sidewall and under the tread.
(6) 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
0 358.
(7) Maximum Cold Inflation
Load Limit
can be carried and the maximum
pressure needed to support
that load.

Tire Designations

Tire Size
The example shows a typical
passenger vehicle tire size.
The type
Passenger (P-Metric) Tire
(1) Passenger (P-Metric) Tire
The United States version of a
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
:
:
VEHICLE CARE
(2) Tire Width The 3-digit
:
number indicates the tire section
width in millimeters from sidewall
to sidewall.
(3) Aspect Ratio A 2-digit
:
number that indicates the tire
height-to-width measurements.
For example, if the tire size aspect
ratio is 75, as shown in item (3) of
the illustration, it would mean
that the tire's sidewall is
75 percent as high as it is wide.
(4) Construction Code
code is used to indicate the type
of ply construction in the tire. The
letter "R" means radial ply
construction; the letter "D" means
diagonal or bias ply construction.
(5) Rim Diameter Diameter of
:
the wheel in inches.
(6) Service Description
characters represent the load
index and speed rating of the tire.
The load index represents the load
carrying capacity a tire is certified
345
A letter
:
These
: