6-1. Specifications
Tire related term
Meaning
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 (distributed 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
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 system in which the rim is designed
with rim flanges pointed radially inward and the
tire is designed to fit on the underside of the
rim in a manner that encloses the rim flanges
inside the air cavity of the tire
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