| 摘要 |
The invention concerns a tyre P designed to be mounted on a rim whereof the seats form with the axis of rotation an angle ranging between 0 DEG and 6 DEG , and comprising a radial carcass reinforcement (1) anchored in each bead B to a bead core (2) forming a turn-up (10), said bead core (2) being radially topped, axially between the main reinforcement (1) and its turn-up (10), with at least an extruded profile (3) of rubber mixture substantially triangular in shape and with high Shore A hardness. The invention is characterised in that the meridian profile of the axially outer surface of each bead B having definite curvature gap, is combined with the presence above the bead core of an extruded profile (3) of rubber mixture with high hardness, said extruded profile (3) being axially in contact over its entire height with the turn-up (10) of the carcass reinforcement (1), and separated from the main part of said reinforcement (1) by an extruded profile (4) of rubber mixture with low hardness, while a third extruded profile (5), axially external to the turn-up (10), consists of a mixture with low hardness. |
