Tire Terminology And Definitions - Hyundai EQUUS 2016 Owner's Manual

Maintenance
CAUTION
• It is difficult to recognize a tire
damage only with your eyes.
When there is a slight hint of a
tire damage,
replace the tire to prevent the
damage caused by air leak-
age.
• When a tire is damaged while
driving on a rough road, off a
road, or over obstacles, such
as a pothole, manhole, or curb
stone, your warranty does not
cover the damage.
• The tire information is speci-
fied on the tire side wall.
Tire terminology and defini-
tions
Air Pressure: The amount of air
inside a tire, pressing the inside the
tire outwards. Air pressure is meas-
ured in pounds per square inch (psi)
or kilopascal (kPa).
Accessory Weight: This is the com-
bined weights of optional acces-
sories. Some examples of optional
accessories are the automatic trans-
mission, power seats, and air condi-
tioning.
Aspect Ratio: The ratio of a tire
width to a height.
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 the
steel wires wrapped with steel cords.
This holds a tire onto a rim.
7-52
Bias Ply Tire: This is a pneumatic
tire, in which plies are laid at alter-
nate angles less than 90 degrees on
the tread centerline.
Cold Tire Pressure: This is the
amount of air pressure inside a tire,
check and
measured in pounds per square inch
(psi) or kilopascals (kPa), before the
heat build-up due to driving.
Curb Weight: This is the vehicle
weight with standard and optional
equipment including the full fuel tank,
oil tanks and coolant tanks. However,
this excludes the weight of passen-
gers and loads.
DOT Markings: This code is marked
on a tire side wall, as an indication of
the its compliance with the U.S.
Department of Transportation motor
vehicle safety standards. The DOT
code includes the Tire Identification
Number (TIN), alphanumeric desig-
nator for the manufacturer identifica-
tion, manufacturing plant, brand and
manufacturing date.
GVWR: Gross Vehicle Weight Rating
GAWR FRT: Gross Axle Weight
Rating for the Front Axle.
GAWR RR: Gross Axle Weight
Rating for the Rear axle.
Intended Outboard Sidewall: This
asymmetrical tire side must face out-
wards, while being installed on a
vehicle.
Kilopascal (kPa): The metric unit for
air pressure.
Light Truck (LT) Tire: A tire desig-
nated by its manufacturer as primari-
ly intended for use on lightweight
trucks or multipurpose passenger
vehicles.
Load Ratings: The maximum load
that a tire is rated to carry for a given
inflation pressure.