Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
382
Vehicle Care
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 kPa (kilopascal) or psi
(pounds per square inch).
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 kPa
(kilopascal) or psi (pounds
per square inch) before a
tire has built up heat from
driving. See Tire Pressure
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 Vehicle
Load Limits
GAWR FRT
:
Gross Axle
Weight Rating for the front
axle. See Vehicle Load
Limits
GAWR RR
:
Gross Axle
Weight Rating for the rear
axle. See Vehicle Load
Limits
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.