Tire Designations - GMC 2013 Sierra Owner's Manual

manufactured. The TIN is
molded onto both sides of the
tire, although only one side may
have the date of manufacture.
(F) Tire Ply Material The type
:
of cord and number of plies in
the sidewall and under the tread.
(G) Single Tire Maximum
Load Maximum load that can
:
be carried and the maximum
pressure needed to support that
load when used as a single. For
information on recommended
tire pressure see Tire Pressure
on page 10 55 and Vehicle Load
Limits on page 9 15.

Tire Designations

Tire Size
The examples show a typical
passenger vehicle and light
truck tire size.
Passenger (P Metric) Tire
(A) 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.
(B) Tire Width The three digit
:
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(C) Aspect Ratio A two digit
:
number that indicates the tire
height to width measurements.
For example, if the tire size
aspect ratio is 75, as shown in
item C of the tire illustration, it
I n f o r ma t i o n P r o v i d e d b y :
Vehicle Care
would mean that the tire's
sidewall is 75 percent as high as
it is wide.
(D) Construction Code
letter 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.
(E) Rim Diameter
the wheel in inches.
(F) 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 to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
10-51
A
:
Diameter of
:
These
: