TYRE, THE CARCASS REINFORCEMENT OF WHICH IS REINFORCED WITH A LAYER OF REINFORCING ELEMENTS IN THE BEAD REGION
The invention relates to a tyre (1) with a radial carcass reinforcement (2) anchored in each of the beads (3) by being wrapped around a bead wire (4), said carcass reinforcement being reinforced by at least one layer of reinforcing elements (8) which is wrapped around the bead wire, one end (10) of said at least one layer of reinforcing elements wrapped around the bead wear being axially on the outside of the wrapped-around portion of carcass reinforcement (7) and radially on the inside of the end (9) of said wrapped-around portion, the other end (11) of said at least one layer of reinforcing elements wrapped around the bead wire being axially on the inside of the carcass reinforcement. According to the invention, the reinforcement elements of said at least one layer of reinforcing elements (8) which is wrapped around the bead wire are unwrapped metal chords (31) with saturated layers which, on the test known as the permeability test, return a flow rate less than 5 cm3/min and the distance (R) between the end, axially on the outside of the wrapped-around portion of carcass reinforcement, of said at least one layer of reinforcing elements which is wrapped around the bead wire and the end of the wrapped-around portion of carcass reinforcement is less than 5 mm.