CHASSIS
488
Tire related term Meaning
Rim diameter
(Wheel diameter)
nominal diameter of the bead seat
Rim size designation rim diameter and width
Rim type designation the industry of manufacturer’s designation for a rim by style or code
Rim width nominal distance between rim flanges
Vehicle capacity weight
(Total load capacity)
the rated cargo and luggage load plus 68 kg (150 lb.) 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 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 the curb weight, accessory weight, and normal occupant weight
(distributed in accordance with Table 1 that follows) and dividing by two
Weather side the surface area of the rim not covered by the inflated tire
Table 1 – Occupant loading and distribution for vehicle normal load for various designated seating capacities