Tire Designations - Chevrolet 2012 Express Owner's Manual

U.S. Department of
Transportation Motor Vehicle
Safety Standards.
(E) 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.
(F) Tire Ply Material
:
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 54 and Vehicle Load
Limits on page 9 10.

Tire Designations

Tire Size
The following examples show
the different parts of a tire size.
The type
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.
Vehicle Care
(B) Tire Width
:
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(C) Aspect Ratio
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 illustration, it 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.
10-49
The three digit
A two digit
:
A
:
Diameter of
: