| 摘要 |
Tyre comprising a carcass which is wrapped around the annular reinforcing structures of each bead forming a main portion and a wrapped-around portion, an apex situated between the main and the wrapped-around portion of the carcass, and an outer strip axially outside of the carcass and of the apex, the apex and the outer strip being made of a rubber compound that has an elastic modulus G' <= 15 MPa and a viscous modulus G" such that: G" <= 0.2 · G' - 0.2 MPa, these moduli being measured at 23° C; wherein the entity formed by the apex and the outer strip has a thickness E(r) such that, in the range of distances r between 25 and 45 % of the height H of the tyre, the variation in thickness (I) is <= -0.25 mm/mm over at least 4 % of the height H, between 15 and 35 % of H, (I) is >= 0.20 mm/mm over at least 2 % of H, and between 10 and 20 % of H, (I) is >= -0.10 mm/mm and <= 0.0 mm/mm over at least 5 % of H. |
