Radial tire with a low angle carcass overlay ply

摘要

A radial tire having a belt structure consisting of a pair of belt plies reinforced with parallel cords. A single ply is disposed between the carcass plies of the tire and the belt structure. This single ply or carcass overlay is reinforced with parallel cords which extend circumferentially of the tire. Further, the reinforcement cords of the carcass overlay are inextensible when the tire is molded and vulcanized, but elongatable in correlated relation to the blow-up ratio of the tire from a cylindrical to a toroidal shape.