Tire having specified crown reinforcement

A tire having a carcass reinforcement (1) and a crown reinforcement (3) comprising at least two working crown plies (32, 34) of inextensible cables, crossed from one ply (32) to the next (34), forming angles (.alpha., .beta.) of between 10.degree. and 45.degree. with the circumferential direction, said plies having widths L.sub.32, L.sub.34 at least equal to 80% of the maximum axial width S.sub.0 of the carcass reinforcement (1), the tire characterised in that firstly an axially continuous ply (31) formed of inextensible metal cables forming with the circumferential direction an angle .delta. of at least 60.degree. and the axial width L.sub.31 of which is at least equal to the axial width L.sub.32,L.sub..div. of the shortest working crown ply (32, 34) is arranged between the carcass reinforcement (1) and the working ply (32) radially closest to the axis of rotation, and secondly an additional ply (33) formed of metallic elements oriented substantially parallel to the circumferential direction, the axial width L.sub.33 of said additional ply being at least equal to 0.7 S.sub.0, and its elasticity modulus upon traction being at most equal to that of the most extensible working ply, is arranged between the two working crown plies (32, 34).