| 摘要 |
<p>The invention concerns a tyre with radial body ply reinforcement (1), anchored in each bead B at an anchoring bead core (2) to form a turn-up (10) characterised in that, axially on the outside of said turn-up (10) of the body ply reinforcement (1), is arranged a section (5) of vulcanised rubber mixture whereof the secant modulus of elasticity in tension measured for a relative elongation of 10 % is much higher than similar moduli of the other mixtures which constitute the bead B, the main part of said body ply reinforcement (1) between its point of tangency T at the anchoring bead core (2) and a point A located at a radial distance HA from the base D of the bead cores, ranging between 35 % and 65 % of the radial distance HE separating the points of maximum axial width of said body ply reinforcement (1) from said base D, with a substantially rectilinear meridian profile.</p> |
