Cadillac 2011 SRX User Manual download pdf (Page 395)

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Cadillac SRX Owner Manual - 2011

Vehicle Care 10-57

Tire Sidewall Labeling

Useful information about a

tire is molded into its sidewall.

The examples show a typical

passenger vehicle tire and a

compact spare tire sidewall.

Passenger (P‐Metric) 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 specification

code molded onto the sidewall.

GM's TPC specifications meet

or exceed all federal safety

guidelines.

(C) 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.

(D) Tire Identificat ion

Number (TIN)

: The letters

and numbers following the DOT

(Department of Transportation)

code are the Tire Identification

Number (TIN). The TIN shows

the manufacture r 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 10‑76.

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