| 摘要 |
A tire has at least one radial carcass reinforcement anchored within each bead B to at least one bead wire to form an upturn, wherein the carcass reinforcement meridian profile trace between a point A of greatest axial width and a point of tangency T with the circle circumscribed on the coating layer of the anchoring bead wire is convex over its entire length, and the thickness epsi of the bead B, measured on a line perpendicular to the meridian profile at a point C of height hc of between 30 and 40 mm and measured to the base YY', is between 2.5 and 3.0 times the thickness e of the sidewall measured on a straight line D'' of greatest axial width, an additional reinforcement armature of at least one ply of circumferential reinforcement elements being arranged axially to the inside of the carcass reinforcement non-upturned part. |
