| 摘要 |
<p>Provided is a pneumatic tyre tread capable of mitigating air column resonance and maintaining drainage performance while ensuring that the flexible fences are abraded to a similar extent to the tread portion. A pneumatic tyre tread 1 of the present invention is formed from a rubber composition and has a tread portion 2, in which is formed at least one primary groove 3 of depth D and width W having a base surface 33 and two opposing walls 31 and 32, and multiple flexible fences 4 of thickness E, which extend inside the primary groove such that at least 70% of the cross-sectional area of the primary groove is blocked and which are disposed at intervals such that at least one of the multiple flexible fences is in the primary groove in the tread contact patch when the tyre is rolling, wherein the multiple flexible fences are formed from at least a rubber composition for fences that is different from the rubber composition for the tread portion; and the rubber composition for fences has an abrasion index that is more than or equal to twice the abrasion index of the rubber composition of the tread portion.</p> |
