Patent ID: 9592705
Date: 2017-03-14
CPC Classifications: B60C

Claim:
1. A pneumatic tire having a tread which has at least one main groove comprising a bottom surface and opposing first and second wall surfaces and a plurality of flexible fences which have a thickness E and are formed within the at least one main groove, and at least one ply which is disposed radially inward of the tread and which extends in the circumferential direction of the tire, wherein the abovementioned plurality of flexible fences extend within the abovementioned main groove so as to interrupt at least 70% of the cross-sectional area of the abovementioned main groove and are disposed with a spacing such that at least one flexible fence is present within the abovementioned main groove within a tread footprint when the tire is rolling, wherein a plurality of recessed portions having an opening which opens in the abovementioned main groove are formed in the bottom surface, the first wall surface and/or the second wall surface of the abovementioned main groove, and wherein the abovementioned plurality of flexible fences are connected respectively to the abovementioned plurality of recessed portions and extend into the abovementioned main groove through the openings of the abovementioned recessed portions, wherein the openings of the abovementioned recessed portions each have edge portions extending in the width direction of the main groove at locations that are separated in the direction in which the abovementioned main groove extends, and wherein, in the direction in which the abovementioned main groove extends, a distance Lhrt from the abovementioned flexible fence to at least one edge portion from among the abovementioned edge portions of the abovementioned opening is at least equal to 1.25 mm and is at most equal to 120% of a height h of the flexible fences when new.