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(A) Temporary Use Only: The compact spare tire or
temporary use tire has a tread life of approximately
3,000 miles (5 000 km) and should not be driven
at speeds over 65 mph (105 km/h). The compact spare
tire is for emergency use when a regular road tire
has lost air and gone flat. See Compact Spare Tire on
page 5-81 and If a Tire Goes Flat on page 5-69.
(B) Tire Ply Material: The type of cord and number of
plies in the sidewall and under the tread.
(C) Tire Identification Number (TIN): 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. See Compact Spare Tire
on page 5-81 and Loading Your Vehicle on page 4-34.
(E) Tire Inflation: The temporary use tire or compact
spare tire should be inflated to 60 psi (420 kPa).
For more information on tire pressure and inflation see
Inflation - Tire Pressure on page 5-61.
(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.
5-57