Tire Terminology And Definitions - GMC Sierra Denali 2015 Owner's Manual

GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299750) - 2015 - crc - 11/8/13
10-54 Vehicle Care
(LT-Metric) tire illustration, it
would mean that the tire's
sidewall is 75 percent as high as
it is wide.
(4) Construction Code
letter code is used to indicate
the type of ply construction in
the tire. The letter R means
radial ply construction; the
letter D means diagonal or bias
ply construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter Diameter of
:
the wheel in inches.
(6) Load Range Load Range.
:
(7) Service Description
service description indicates the
load index and speed rating of a
tire. If two numbers are given as
in the example, 120/116, then
this represents the load index for
single versus dual wheel usage
(single/dual). The speed rating is
the maximum speed a tire is
certified to carry a load.
Tire Terminology and
A
:
Definitions
Air Pressure
air inside the tire pressing
outward on each square inch of
the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
The
:
windows, power seats, and air
conditioning.
Aspect Ratio
of a tire's height to its width.
Belt
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials.
Bead
steel wires wrapped by steel
The amount of
:
cords that hold the tire onto
the rim.
Bias Ply Tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
The
:
the tread.
Cold Tire Pressure
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire Pressure
The relationship
:
on page 10-57.
Curb Weight
motor vehicle with standard and
optional equipment including the
Black plate (54,1)
A rubber coated layer of
:
The tire bead contains
:
A pneumatic tire
:
The
:
The weight of a
: