Buick 2010 Lucerne Owner's Manual page 367

(F) Uniform Tire Quality Grading (UTQG)
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 6-76.
(G) Maximum Cold Inflation Load Limit
Maximum load that can be carried and the
maximum pressure needed to support that load.
Compact Spare Tire Example
Tire (A) Temporary Use Only
:
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. If your
:
vehicle has a compact spare tire, see Compact
Spare Tire on page 6-99 and If a Tire Goes Flat on
page 6-81.
(B) Tire Ply Material
number of plies in the sidewall and under the
tread.
(C) Tire Identification Number (TIN)
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
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 6-66.
The compact
:
The type of cord and
:
:
The temporary use tire or
:
The letters
:
6-61