TYRE WITH CARCASS REINFORCEMENT REINFORCED BY A LAYER OF REINFORCING ELEMENTS IN THE BEAD REGION

摘要

The invention relates to a tyre (1) having a radial carcass reinforcement (2) that is made up of at least one layer of reinforcing elements anchored in each of the beads (3) by being turned up around a bead wire (4), said carcass reinforcement turn-up being reinforced by at least one layer of reinforcing elements or stiffeners (8). According to the invention, the reinforcing elements of at least one stiffener (8) are non-wrapped metal cords with saturated layers having a flow rate of less than 5 cm3/min in the permeability test, and at least one layer of elastomer blend present at least partially in the surface of a region S, in a radial plane, is an elastomer blend based on natural rubber or on synthetic polyisoprene and on a reinforcing filler that provides increased cohesion.