| 主权项 |
1. A pneumatic tire tread comprising:
a tread part which comes into contact with the road surface when the tire is rolling, wherein is formed at least one main groove having a bottom surface and two opposing wall surfaces and having a depth D and a width W, and a plurality of flexible fences having a thickness E which extend inside the main groove in the radially outwards direction of the tire in such a way as to obstruct at least 70% of the cross-sectional area of the main groove and in such a way as to lie at a distance from the wall surfaces from the bottom surface of the main groove, the flexible fences being disposed at intervals such that at least one of said flexible fences is present inside the main groove within the tread footprint when the tire is rolling, wherein the plurality of flexible fences comprise an inside portion having an end edge part which is connected to the bottom surface of the main groove, and an outside portion which is radially outside a predetermined height D1 from the bottom surface of the main groove, and the average angle of inclination of the inside portion with respect to a line perpendicular to the surface of the tread part in contact with the road surface is greater than the average angle of inclination of the outside portion with respect to a line perpendicular to the surface of the tread part in contact with the road surface, when viewed in cross section parallel to the direction in which the main groove extends and on a plane perpendicular to the surface of the tread part in contact with the road surface. |
