| 摘要 |
PURPOSE:To provide a tread pattern that can reduce noise while maintaining draining and gripping properties on a wet road surface. CONSTITUTION:In a pneumatic tire having a plurality of main grooves 11,12 extending in a substantial direction and subsidiary grooves 2 crossing the main grooves 11,12 on the tread T, the axial outer ends of the subsidiary grooves 2 on at least one side of the tread T divided by the equatorial plane C of the tire remain within the tread so that the negative ratio Nb of one side of the tread T is greater than the negative ratio Na of the other opposite side of the tread T across the equatorial plane P of the tire. |
