Toyota SCION XB 2005 Owner's Manual page 140

Tire related term
Vehicle normal load on the tire
Weather side
Table 1– Occupant loading and distribution for vehicle normal load for various designated seating capacities
Designated seating capacity, number
of occupants
2 through 4
5 through 10
134
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
the surface area of the rim not covered by the inflated tire
Vehicle normal load, number of occu-
pants
2
3
Meaning
Occupant distribution in a normally
loaded vehicle
2 in front
2 in front, 1 in second seat