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6-1. Specifications
Vehicle capacity weight
(Total load capacity)
The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle's designated seating capacity
Occupant distribution
Distribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Recommended inflation
pressure
Cold tire inflation pressure recommended by a man-
ufacturer.
Rim
A metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter)
Nominal diameter of the bead seat
Rim size designation Rim diameter and width
Rim type designation
The industry manufacturer's designation for a rim by
style or code
Rim width Nominal distance between rim flanges
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 vehicle weight, and dividing by two
Vehicle normal load on
the tire
The load on an individual tire that is determined by
distributing to each axle its share of curb weight,
accessory weight, and normal occupant weight (dis-
tributed in accordance with Table 1
* below), and
dividing by two
Weather side
The surface area of the rim not covered by the
inflated tire
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
Bead separation
A breakdown of the bond between components in
the bead
Tire related term Meaning
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