Tire Designations - Chevrolet 2013 Express Owner's Manual

10-48 Vehicle Care
see Tire Pressure on
page 10 53 and Vehicle Load
Limits on page 9 10.
(4) DOT (Department of
Transportation) The
:
Department of Transportation
(DOT) code indicates that
the tire is in compliance with
the U.S. Department of
Transportation Motor Vehicle
Safety Standards.
DOT Tire Date of
Manufacture The last four
:
digits of the TIN indicate the tire
manufactured date. The first two
digits represent the week
(01-52) and the last two digits,
the year. For example, the third
week of the year 2010 would
have a four-digit DOT date
of 0310.
(5) 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.
(6) Tire Ply Material The type
:
of cord and number of plies in
the sidewall and under the tread.
(7) 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 53 and Vehicle Load
Limits on page 9 10.

Tire Designations

Tire Size
The following examples show
the different parts of a tire size.
I n f o r ma t i o n P r o v i d e d b y :
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.
(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.