| 摘要 |
<p>Tire comprising a carcass reinforcement and two beads, each comprising at least one annular reinforcing structure, a bead filler and an outer strip made from a rubber composition having an elastic modulus G′of less than or equal to 15 MPa and a viscous modulus G″such that G″[MPa]≰0.2·G′[MPa]−0.2 MPa, wherein the bead filler has a thickness E(r) perpendicular to the carcass reinforcement with the bead filler, r denoting the distance from the radially innermost point of the annular reinforcing structure, wherein the assembly formed by the bead filler and the outer strip has a thickness ET(r), wherein the thickness ET(r) changes such that, in the range of distances r comprised between 25 and 45% of the height H of the tire, the variation in thickness is less than or equal to−0.25 mm/mm over at least 4% of the height H, wherein, for all the points of which the distance r is greater than 10% and less than 35% of the height H, the ratio E(r)/ET(r) is greater than 0.3 and less than or 0.5, wherein, in any radial section, the bead filler has a cross section of area S1 and the outer strip has a cross section of area S2, the ratio S1/(S1+S2) being greater than 0.4 and less than 0.6, and wherein the annular reinforcing structure has a maximum axial width DE such that the ratio ET ( r ) max - DE ET ( r ) max , where ET(r)max is the maximum value of the thickness ET(r), is less than 10%.</p> |
