Tire Designations - GMC CHEVROLET Equinox 2021 Owner's Manual

282 Vehicle Care
has lost air and gone flat. If the vehicle
has a compact spare tire, see Compact
Spare Tire 0 307 and
If a Tire Goes Flat 0 295.
(3) Tire Identification Number (TIN)
The letters and numbers 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.
(4) Maximum Cold Inflation Load
Limit Maximum load that can be
:
carried and the maximum pressure
needed to support that load.
(5) Tire Inflation The temporary use
:
tire or compact spare tire should be
inflated to 420 kPa (60 psi). For more
information on tire pressure and
inflation see Tire Pressure 0 285.
(6) Tire Size A combination of letters
:
and numbers define a tire's width,
height, aspect ratio, construction type,
and service description. The letter T as
the first character in the tire size means
the tire is for temporary use only.
(7) 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.

Tire Designations

Tire Size
The example shows a typical passenger
vehicle tire size.
Passenger (P-Metric) Tire
(1) Passenger (P-Metric) Tire
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.
(2) Tire Width
indicates the tire section width in
millimeters from sidewall to sidewall.
(3) Aspect Ratio
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
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
wheel in inches.
(6) Service Description
The
:
characters represent the load index and
speed rating of the tire. The load index
represents the load carrying capacity a
The 3-digit number
:
A 2-digit number that
:
A letter code is
:
Diameter of the
:
These
: