Chevrolet 2004 Monte Carlo Spécifications télécharger pdf (Page 325)

(F) Tire Size: A combination of letters and numbers

deﬁne a tire’s width, height, aspect ratio, construction

type and service description. The letter “T” as the

ﬁrst character in the tire size means the tire is for

temporary use only.

(G) Tire Performance Criteria Speciﬁcation

(TPC Spec): 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.

Tire Size

The following illustration shows an example of a typical

passenger car tire size.

(A) 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.

(B) Tire Width: The three-digit number indicates the

tire section width in millimeters from sidewall to sidewall.

the tire height-to-width measurements. For example, if

the tire size aspect ratio is “70,” as shown in item “C” of

the illustration, it would mean that the tire’s sidewall is

70% as high as it is wide.

(D) Construction Code: A letter code is used to

indicate the type of ply construction in the tire. The letter

“R” means radial ply construction; the letter “D” means

diagonal or bias ply construction; and the letter “B”

means belted-bias ply construction.

(E) Rim Diameter: Diameter of the wheel in inches.

(F) Service Description: These characters represent

the load range and the speed rating of a tire. The load

range represents the load carrying capacity a tire is

certiﬁed to carry. The load index can range from 1 to 279.

The speed rating is the maximum speed a tire is certiﬁed

to carry a load. Speed ratings range from “A” to “Z”.

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Chevrolet 2004 Monte Carlo Spécifications Page 325