| 摘要 |
<p>The radial tyre for motorcycles comprises a carcass (6) comprising a radial ply, and a band (7) disposed radially outside the carcass (6) in the tread portion (2). The tread portion (2) is curved so that the maximum tyre section width (Wt) lies between the tread edges (Te). The band (7) is made of spirally wound cords (11), wherein each cord (11) has a variable tension modulus which continuously increases from its zero elongation to 1.0 % elongation. Preferably, the elongation at rupture of the band cord (11) is not more than 4.0 %. The bending rigidity index of the band (7), defined as the product of a bending rigidity of a band cord and the band cord count per 5 cm width, is in a range of from 300 to 600 gram centimetre. <IMAGE></p> |
