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INSPECTION AND MAINTENANCE
57L20-03E
GLOSSARY OF TIRE TERMINOL-
OGY
Accessory Weight – the combined
weight (in excess of those standard
items which may be replaced) of CVT,
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).
Cold Tire Inflation Pressure – the pres-
sure in a tire that has been driven less
than 1 mile or has been standing for
three hours or more.
Curb Weight – the weight of a motor
vehicle with standard equipment
including the maximum capacity of
fuel, oil, and coolant, and, if so
equipped, air conditioning and addi-
tional weight optional engine.
Intended Outboard Sidewall – (1) the
sidewall that contains a whitewall,
bears white lettering or bears manu-
facturer, brand, and/or model name
molding that is higher or deeper than
the same molding on the other side-
wall of the tire, or (2) the outward fac-
ing sidewall of an asymmetrical tire
that has a particular side that must
always face outward when mounted
on a vehicle.
Maximum Inflation Pressure – the max-
imum cold inflation pressure a tire is
designed to support in normal service.
Maximum Loaded Vehicle Weight –
the sum of curb weight, accessory
weight, vehicle capacity weight (total
load capacity), and production options
weight.
Normal Occupant Weight – 68 kilo-
grams times the number of occupants
specified in the second column of
Table 1 (shown below).
Occupant distribution – distribution of
occupants in a vehicle as specified in
the third column of Table 1 (shown
below).
Production Options Weight – the com-
bined weight of those installed regular
production options weighing over 2.3
kilograms in excess of those standard
items which they replace, not previ-
ously considered in curb weight or
accessory weight, including heavy
duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim.
Recommended Inflation Pressure –
the cold tire inflation pressure recom-
mended by a manufacturer.
Rim – metal support for a tire or tire
and tube assembly upon which the tire
beads are seated.
Vehicle Capacity Weight – the rated
cargo and luggage load plus 68 kilo-
grams (150 lbs) times the vehicle’s
designated seating capacity.
Vehicle Maximum Load on the Tire –
the load on an individual tire that is
determined by distributing to each axle
its share of the maximum loaded vehi-
cle weight and dividing by two.
Vehicle Normal Load on the Tire – the
load on an individual tire that is deter-
mined by distributing to each axle its
share of the curb weight, accessory
weight, and normal occupant weight
(distributed in accordance with Table 1
shown below) and dividing by 2.
TABLE 1 – Occupant Loading and
Distribution For Vehicle Normal
Load For Various Designated Seat-
ing Capacities
Designated
seating
capacity,
number of
occupants
Vehicle nor-
mal load,
number of
occupants
Occupant
distribution
in a nor-
mally loaded
vehicle
2 through 4 2 2 in front
5 through 10
3
2 in front,
1 in second
seat