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8-1. Specifications
Vehicle maximum load on the
tire
The load on an individual tire that is determined by distrib-
uting 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 distrib-
uting to each axle its share of curb weight, accessory
weight, and normal occupant weight (distributed in accor-
dance 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
Bias ply tire
A pneumatic tire in which the ply cords that extend to the
beads are laid at alternate angles substantially less than
90 degrees to the centerline of the tread
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 forming the plies in the tire
Cord separation The parting of cords from adjacent rubber compounds
Cracking
Any parting within the tread, sidewall, or innerliner of the
tire extending to cord material
CT
A pneumatic tire with an inverted flange tire and rim sys-
tem in which the rim is designed with rim flanges pointed
radially inward and the tire is designed to fit on the under-
side of the rim in a manner that encloses the rim flanges
inside the air cavity of the tire
Extra load tire
A tire designed to operate at higher loads and at higher
inflation pressures than the corresponding standard tire
Groove The space between two adjacent tread ribs
Innerliner
The layer(s) forming the inside surface of a tubeless tire
that contains the inflating medium within the tire
Innerliner separation
The parting of the innerliner from cord material in the car-
cass
Tire related term Meaning
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