Tire with a reinforcing belt structure

摘要

A tire with a reinforcing belt structure comprising three plies. The inner and outer plies each have a main body portion and a single folded end portion. The main body portions of the inner and outer plies have substantially the same width. The cords of the inner and outer plies have the same orientation with respect to the mid-circumferential centerplane of the tire. The folded end portion of each of the inner and outer plies is disposed radially outwardly of its respective main body portion. The inner and outer plies are arranged in such a way that the unfolded lateral end portion of the main body ply of the radially outer ply is enclosed by the bight of the radially inner ply. A middle unfolded ply is interposed between the main body portion of the inner and outer plies and comprises cords which are oriented with respect to the mid-circumferential centerplane of the tire in the direction opposite to the cords of the adjacent folded plies. The cords of the folded plies are made preferably of steel and the cords of the middle unfolded ply are made preferably of a high modulus non-metallic material.