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Buick Regal Owner Manual - 2012
Vehicle Care 10-51
Rim: Ametalsupportforatire
and upon which the tire beads
are seated.
Sidewall
: The portion of a tire
between the tread and the bead.
Speed Rating
: An
alphanumeric code assigned to
atireindicatingthemaximum
speed at which a tire can
operate.
Traction
: The friction between
the tire and the road surface.
The amount of grip provided.
Tread
: The portion of a tire that
comes into contact with
the road.
Treadwear Indicators
: Narrow
bands, sometimes called wear
bars, that show across the tread
of a tire when only 1.6 mm
(1/16 in) of tread remains. See
When It Is Time for New Tires
on page 10�60.
UTQGS (Uniform Tire Quality
Grading Standards)
: Atire
information system that provides
consumers with ratings for a
tire's traction, temperature, and
treadwear. Ratings are
determined by tire
manufacturers using
government testing procedu res.
The ratings are molded into the
sidewall of the tire. See Uniform
Tire Quality Grading on
page 10�62.
Vehicle Capacity Weight
: The
number of designated seating
positions multiplied by 68 kg
(150 lbs) plus the rated cargo
load. See Vehicle Load Limits
on page 9�10.
Vehicle Maximum Load on the
Tire
: Load on an individual tire
due to curb weight, accessory
weight, occupant weight, and
cargo weight.
Vehicle Placard
: Alabel
permanently attached to a
vehicle showing the vehicle
capacity weight and the original
equipment tire size and
recommended inflation pressure.
See “Tire and Loading
Information Label” under Vehicle
Load Limits on page 9�10.