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Tire Glossary
R
Tire Glossary
GLOSSARY
Cold tire pressure:
Pressure in a tire that has been driven for
less than one mile or has been standing
for three hours or more.
Maximum inflation pressure:
Maximum air pressure, to which a cold
tire may be inflated, this figure (in psi and
kPa) is moulded onto the sidewall of a tire.
Curb weight:
The weight of a motor vehicle with
standard equipment including the
maximum capacity of fuel, oil, coolant
and if so equipped, air conditioning and
additional weight optional engine.
Accessory weight:
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Production options weight:
The combined weight of those installed
production options weighing over 3 lb (1.4
kg) in excess of those standard items
which they replace, not previously
considered in curb weight or accessory
weight, including heavy duty brakes, ride
levellers, roof rack, heavy duty battery
and special trim.
Vehicle capacity weight:
The rated cargo and luggage load plus
68.0 kg (150.0 lb) times the vehicle’s
designated seating capacity.
Maximum loaded vehicle weight:
This is the sum of:
• Curb weight.
• Accessory weight.
• Vehicle capacity weight.
• Production options weight.
Rim:
A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated.
Bead:
The part of the tire that is made of steel
wires, wrapped or reinforced by ply cords
and that is shaped to fit the rim.