Pontiac 2009 Vibe - Manual (Page 217)

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 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 8-32.
GAWR FRT : Gross Axle
Weight Rating for the front axle.
See Loading the Vehicle on
page 8-32.
GAWR RR : Gross Axle
Weight Rating for the rear axle.
See Loading the Vehicle on
page 8-32.
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.
Vehicle Service and Care 9-45
2009 - Pontiac Vibe Owner Manual