Vehicle maximum load on the tire
The load on an individual tire that is determined by taking each axle's share of the maximum loaded
vehicle weight (GAWR) and dividing by 2.
Vehicle normal load on the tire
The load on an individual tire that is determined by taking each axle's share of the curb weight,
accessory weight, and normal occupant weight (distributed according to the table below) and dividing
by 2.
Wheel size designation
Wheel rim diameter and width.
Occupant loading and distribution for vehicle normal load for various designated seating
capacities
Designated seating capacity,
number of occupants
Vehicle normal load, number
of occupants
Occupant distribution in a
normally loaded vehicle
2, 3 or 4
2
2 in front
5
3
2 in front, 1 in back
Applicable only in Mexico, the AGCC, and South Korea
Glossary of tire and loading terminology
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Please first read and note the introductory information and heed the WARNINGS
.
Accessory weight
The combined weight (in excess of those standard items which may be replaced) of automatic
transmission, electro-mechanical 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).
Aspect ratio
The ratio of sidewall height to tire width, expressed as a percentage. A number of 70 (0.7:1 or 70%) or
lower indicates a low-profile tire with a shorter sidewall for improved steering response and better
overall handling on dry pavement.
Bead
The part of a tire made of steel wires, wrapped or reinforced by ply cords, with the shape and structure
to ensure proper fit to the wheel rim.
Bead separation
A breakdown of the bond between components in the bead.
Carcass
The tire structure, except tread and sidewall rubber which, when inflated, bears the load.
Chunking
The breaking away of pieces of the tread or sidewall.
Cord
The strands of material forming the plies in the tire.