Tire Designations - Cadillac 2014 ATS Owner's Manual

10-48 Vehicle Care
(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 on page 10-63.
(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
metric tire sizing system. The
letter P as the first character in
the tire size means a passenger
Maximum load that
:
:
vehicle tire engineered to
standards set by the U.S. Tire
and Rim Association.
(2) Tire Width The three-digit
:
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(3) Aspect Ratio A two-digit
:
number that indicates the tire
height-to-width measurements.
For example, if the tire size
aspect ratio is 60, as shown in
item 3 of the illustration, it would
mean that the tire's sidewall is
60 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; and the letter B
means belted-bias ply
construction.
A letter
: