| 摘要 |
A run-flat tyre comprises a tread portion (2), a pair of bead portions (4), a pair of sidewall portions (3), a carcass (6) comprising at least one carcass ply (6A, 6B) extending between the bead portions (3), a belt (7) disposed radially outside the carcass (6) in the tread portion (2), and a tread reinforcing layer (10) disposed between carcass plies (6A,6B) or alternatively between the carcass (6) and belt (7), the tread reinforcing layer (10) being made of a high elastic modulus rubber compound having a complex elastic modulus E* of from 10 to 30 MPa, a thickness t of from 0.8 to 2.5 mm, and an axial width WA of 0.7 to 1.0 times the tread width TW of the tyre. <IMAGE> |
