Tire designations, Tire designations -49 – Buick 2011 Lacrosse User Manual

Page 349

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Buick LaCrosse Owner Manual - 2011

Vehicle Care

10-49

regular road tire has lost air
and gone flat. If your vehicle
has a compact spare tire,
see Compact Spare Tire on
page 10‑84
and If a Tire Goes
Flat on page 10‑68
.

(C) Tire Identification Number
(TIN)

:

The letters and numbers

following the DOT (Department
of Transportation) code is 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.

(D) Maximum Cold Inflation
Load Limit

:

Maximum load

that can be carried and the
maximum pressure needed to
support that load.

(E) Tire Inflation

:

The

temporary use tire or compact
spare tire should be inflated to
420 kPa (60 psi). For more
information on tire pressure and
inflation see Tire Pressure on
page 10‑53
.

(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 Designations

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.

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