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Wheels and Tires Glossary
Accessory Weight The combined weight (in excess of those items replaced) of
items available as factory installed equipment.
Bead The inner edge of a tire that is shaped to fit to the rim and form
an air tight seal. The bead is constructed of steel wires which
are wrapped, or reinforced, by the ply cords.
Cold Tire Pressure The air pressure in a tire that has been standing in excess of
three hours, or driven for less than one mile.
Curb Weight The weight of a standard vehicle, including any optional
equipment fitted, and with the correct fluid levels.
Gross Vehicle Weight The maximum permissible weight of a vehicle with driver,
passengers, load, luggage, and equipment.
kPa (kilo pascal) A metric unit used to measure pressure. One kilo pascal equals
approximately 0.145 psi.
Maximum Inflation Pressure The maximum pressure to which the tire should be inflated.
This pressure is given on the tire side wall in psi (lbf/in
2
).
Caution: This pressure marked on the tire is the maximum
allowed by the tire manufacturer. It is not the pressure
Tesla recommends using for Model S.
Maximum Loaded Vehicle
Weight
The sum of curb weight, accessory weight, vehicle capacity
weight, and production options weight.
Production Options Weight The combined weight of options installed which weigh in
excess of 3 lb more than the standard items that they replaced,
and are not already considered in curb or accessory weights.
PSI (lbf/in
2
) Pounds per square inch (the unit used to measure tire
pressure).
Recommended Tire Inflation
Pressure
Tire inflation pressure, established by Tesla, which is based on
the type of tires that are mounted on the vehicle at the factory.
This information can be found on the Tire and Loading
Information label located on the door pillar.
Rim The metal support for a tire, or tire and tube, upon which the
tire beads are seated.
Vehicle Capacity Weight The number of seats multiplied by 150 lbs plus the rated
amount of load/luggage.
Wheels and Tires
170 Model S Owner's Manual
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