RADIAL TYRE WITH AN OBLIQUELY LAP-WELDED CARCASS PLY

A radial tyre having at least one side wall and a carcass reinforcement consisting of at least one ply (20) reinforced by substantially radial parallel yarns (24), and comprising at least one lap weld (21) formed by overlapping two ends (22, 23) or adjacent portions of said ply. The general direction (D2) of the lap weld in said side wall is oblique relative to the direction (D1) of the radial yarns (24). Said radial tyre is particularly suitable for private cars or vans where the carcass reinforcement comprises a single radial ply, and the radial yarns (24) are, in particular, made from polyester and especially from polyethylene terephthalate. Compared with prior art radial tyres, said tyre has side walls with an enhanced outward appearance. PCT No. PCT/EP96/04855 Sec. 371 Date Sep. 21, 1998 Sec. 102(e) Date Sep. 21, 1998 PCT Filed Nov. 6, 1996 PCT Pub. No. WO97/17216 PCT Pub. Date May 15, 1997A radial tire having at least one side wall and a carcass reinforcement consisting of at least one ply (20) reinforced by parallel threads (24) in substantially radial direction, termed radial threads, and having at least one lap weld (21) formed by superposition of two ends (22, 23) or adjacent elements of said ply, characterized in that, in the side wall, the general orientation (D2) of the lap weld is oblique with respect to the direction (D1) of the radial threads (24). The radial tire for a passenger vehicle or van, has a carcass reinforcement which includes a single radial ply, the radial threads (24) having in particular a polyester, particularly polyethylene terephthalate base. The tire according to the invention, compared to prior art radial tires, presents an improved outward appearance of the side walls.