Saturn 2009 ASTRA - Manual (Page 229)

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 9-47.
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 the Vehicle
on page 8-30.
GAWR FRT : Gross Axle
Weight Rating for the front axle.
See Loading the Vehicle on
page 8-30.
GAWR RR : Gross Axle
Weight Rating for the rear axle.
See Loading the Vehicle on
page 8-30.
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.
Vehicle Service and Care 9-45