| 摘要 |
<p>A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the bead portions, a breaker disposed radially outside the carcass, and a band disposed radially outside the breaker and composed of a full width ply extending across the substantially overall width of the breaker and a pair of axially spaced edge plies. In a ground contacting face of the tire under a normally inflate loaded condition which face has axially outermost edges between which the ground contacting width Tw is defined, the circumferential length Ls of the ground contacting face at an axial position 10 % of TW axially inwards of each of the axially outermost edges is in a range of from 75 to 85 % of the circumferential length Lc of the ground contacting face at the center of the ground contacting width. The tread portion is provided on each side of the tire equator with a circumferentially continuously extending inner circumferential groove and the tread portion is divided into a crown part between the inner circumferential grooves and a pair of outer parts axially outside the inner circumferential grooves, and the crown part is formed as a substantially continuously extending circumferential rib. <IMAGE></p> |
