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(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) 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.
Tire Size
The following illustration shows an example of a
typical passenger vehicle tire size.
(A) Passenger (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.
(C) Aspect Ratio
:
A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 60, as
shown in item C of the illustration, it would mean
that the tire’s sidewall is 60 percent 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 speed rating of the
tire. The load index represents the load carry
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.
5-58
Содержание 2009 STS
Страница 13: ...Put someone on it Get it up to speed Then stop the vehicle The rider does not stop 1 9...
Страница 72: ...NOTES 1 68...
Страница 154: ...NOTES 2 82...
Страница 157: ...NOTES 3 3...
Страница 158: ...Instrument Panel Overview 3 4...
Страница 340: ...4 6L V8 Engine 5 14...
Страница 342: ...4 4L V8 STS V Engine 5 16...
Страница 450: ...Underhood Fuse Block 5 124...
Страница 462: ...NOTES 5 136...
Страница 478: ...Engine Drive Belt Routing 3 6L V6 Engine 4 4L V8 Engine 6 16...
Страница 479: ...4 6L V8 Engine 6 17...
Страница 481: ...Maintenance Record cont d Date Odometer Reading Serviced By Maintenance Stamp Services Performed 6 19...
Страница 482: ...Maintenance Record cont d Date Odometer Reading Serviced By Maintenance Stamp Services Performed 6 20...