Patent ID: 6910513

Claim:
A tire intended to be mounted on a rim having at least one bead seat which forms an angle with the axis of rotation of between 0° and 60°, said tire comprising two beads, at least one bead wire within said beads and a radial carcass reinforcement having an upturn portion and a non-upturned main portion, said bead wire being radially surmounted, axially between the upturn portion and the non-upturned portion of the radial carcass reinforcement, said tire further comprising a first rubber mix profile substantially triangular in form and of an elevated Shore A hardness at least equal to 85 points, wherein the meridian profile of the axially outer surface of each bead comprising a first curved portion which is intended to enter into and remain in permanent contact with a bead flange, and which is in an abrupt discontinuity of curvature with a second curved portion, wherein tangents to the first and second curved portions, respectively, at the abrupt discontinuity form together an acute angle of at least 35° with the tire in an unmounted state, and wherein said meridian profile is combined with the presence of the first rubber mix profile of a height such that said meridian profile is axially in contact over its entire height with the upturn of the radial carcass reinforcement and is separated from the main portion of the radial carcass reinforcement by a second rubber mix profile having a low Shore A hardness at most equal to 60 points, and further comprising a third rubber mix profile disposed axially to the outside of the upturn of the radial carcass reinforcement between a protector, which covers the bead axially to the outside, and said upturn.