Tire Terminology And Definitions - Cadillac 2011 Escalade Owner's Manual

10-54 Vehicle Care
(F) Service Description
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire
is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Tire Terminology and
Definitions
Air Pressure The amount
:
of air inside the tire pressing
outward on each square inch
of the tire. Air pressure is
expressed in psi (pounds per
square inch) or kPa (kilopascal).
These Accessory Weight
:
means the combined weight
of optional accessories.
Some examples of optional
accessories are, automatic
transmission, power steering,
power brakes, power windows,
power seats, and air
conditioning.
Aspect Ratio
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.
This
:
The relationship
:
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
:
amount of air pressure in a tire,
measured in psi (pounds per
square inch) or kPa (kilopascal)
before a tire has built up heat
from driving. See Tire Pressure
on page 10 57.
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.
The