Buick 2005 Century Manuel d'utilisateur télécharger pdf (Page 264)

Tire Sidewall Labelling

Useful information about a tire is molded into its

sidewall. The examples below show a typical passenger

vehicle tire and a compact spare tire sidewall.

(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) 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.

Department of Transportation (DOT) code indicates that

the tire is in compliance with the U.S. Department of

Transportation Motor Vehicle Safety Standards.

(D) 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.

(E) Tire Ply Material: The type of cord and number of

plies in the sidewall and under the tread.

(F) Uniform Tire Quality Grading (UTQG): Tire

manufacturers are required to grade tires based on

three performance factors: treadwear, traction and

temperature resistance. For more information see

Uniform Tire Quality Grading on page 5-65.

(G) Maximum Cold Inﬂation Load Limit: Maximum

load that can be carried and the maximum pressure

needed to support that load.

Passenger Vehicle Tire Example

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Buick 2005 Century Manuel d'utilisateur Page 264