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Cross ply/tyre 1) Vehicle tyre constructed with the ply cords laid at alternative angles (less than 90 degrees) to the peripheral line of the tread. Same as a diagonal ply/bias belted tyre. Now largely replaced by use of radial ply tyres. See also Radial [ply] tyre. Radial (ply) tyre 1) Vehicle tyre legally defined as being one structured with the ply cords extending to the bead at (substantially) 90 degrees to the peripheral line of the tread and with the ply cord 'stabilized' with a 'substantially inextensible circumferential belt'. |
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