GMC 2008 Canyon - Manual (Page 320)

Aspect Ratio : The relationship of a tire’s height
to its width.
Belt : A rubber coated layer of cords that is located
between the plies and the tread. Cords may be
made from steel or other reinforcing materials.
Bead : The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire : A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
Cold Tire Pressure : The amount of air pressure
in a tire, measured in pounds per square inch
(psi) or kilopascals (kPa) before a tire has built up
heat from driving. See Inflation - Tire Pressure
on page 5-62.
Curb Weight : The weight of a motor vehicle with
standard and optional equipment including the
maximum capacity of fuel, oil, and coolant,
but without passengers and cargo.
DOT Markings : A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identification Number (TIN),
an alphanumeric designator which can also identify
the tire manufacturer, production plant, brand,
and date of production.
GVWR : Gross Vehicle Weight Rating. See
Loading Your Vehicle on page 4-32.
GAWR FRT : Gross Axle Weight Rating for the
front axle. See Loading Your Vehicle on page 4-32.
GAWR RR : Gross Axle Weight Rating for the rear
axle. See Loading Your Vehicle on page 4-32.
Intended Outboard Sidewall : The side of
an asymmetrical tire, that must always face
outward when mounted on a vehicle.
Kilopascal (kPa) : The metric unit for air pressure.
Light Truck (LT-Metric) Tire : A tire used on
light duty trucks and some multipurpose passenger
vehicles.
Load Index : An assigned number ranging from
1 to 279 that corresponds to the load carrying
capacity of a tire.
Maximum Inflation Pressure : The maximum air
pressure to which a cold tire can be inflated. The
maximum air pressure is molded onto the sidewall.
Maximum Load Rating : The load rating for a tire
at the maximum permissible inflation pressure
for that tire.
5-60