Tire Sidewall Labeling - Chevrolet 2007 Optra Owner's Manual

Tire Sidewall Labeling

Useful information about a tire is molded into its
sidewall. The examples below show a typical
passenger car tire and a compact spare tire
sidewall.
Passenger Car Tire Example
304
(A) Tire Size: The tire size is a combination of
letters and numbers used to define a particular
tire's width, height, aspect ratio, construction type
and service description. See the "Tire Size"
illustration later in this section for more detail.
(B) 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.
(C) Tire Identification Number (TIN): The letters
and numbers following 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.