Cadillac 2011 DTS User Manual download pdf (Page 359)

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Cadillac DTS Owner Manual - 2011

Tire Sidewall Labeling

Useful information about a tire is molded into its

sidewall.

Passenger Car Tire Example

(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 specifica tion code molded onto the sidewall.

GM's TPC specifications meet or exceed all

federal safety guidelines.

: The

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 Identificat ion 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 manufacture d. 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 6‑70

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