| 摘要 |
A pneumatic tyre of which the tread pattern noise is improved without sacrificing tread wear resistance or steering stability is disclosed. The tread portion (2) is provided with circumferentially spaced lateral grooves (11) and blocks therebetween to define a sequence of pitches (P) of tread pattern design cycles. In a sequence of the pitches, all the tread elements are the same circumferential length, but the circumferential widths of the lateral grooves are varied so that the pitches are varied in the tyre circumferential direction. <IMAGE> |
