TYRE AND METAL/RUBBER COMPOSITE THEREFOR
The invention relates to a tyre provided with a crown covered with a belt thread, a top reinforcement, two sidewalls and two beads, a carcass reinforcement passing in two sidewalls and anchored in each bead by anchoring means which comprises at least one bead, a circumferential alignment of at least one circumferentially oriented anchoring reinforcement interacting with a rubber called anchoring gum composition. Said tyre is characterised in that the anchoring reinforcement is embodied in the form of a two-layer M+N structured wire rope comprising an internal layer C1 consisting of M wires with a diameter d1 which are jointly helically wound with a pitch p1, wherein said layer C1 is also surrounded with an external layer C2 consisting of N wires with a diameter d2 which are jointly helically wound with a pitch p2 and said anchoring wire rope exhibits the following characteristics (d1, d2, p1 and p2 in mm): 2=M= 4, M+3=N=M+7, 0,25<D1< 0,40; 0,25<D2<0,40; 3,5<P1<7<P2<14. Said invention also relates to a metal/rubber composition comprising said two-layer wire rope associated with a high-rigid rubber matrix which has, in the vulcanised state thereof, a secant extension modulus for elongation of 10 % is greater that 20 MPa.