Patent ID: 8393366

Claim:
A tire tread comprising a tread surface provided with a tread pattern comprising a plurality of sipes, each sipe being delimited by two opposing main walls, each of the said walls consisting of a mean surface of which the intersection with the tread surface in the initial condition forms an edge, the mean width of each sipe measured as the mean distance between the edges formed by the opposing main walls of the said sipe on the tread surface in the initial condition is at least equal to 1.5 mm, wherein each of the main walls of these sipes form between them a non-zero mean angle α (alpha), said walls being inclined in such a way that they converge towards one another in the direction towards the inside of the tread, wherein such sipe comprises at least one locking region, each locking region of a main wall collaborating with a locking region of the wall opposite in such a way as to mechanically block relative movements of the said walls at least when the tire is in contact with a road surface, the percentage of the total surface area occupied by these locking regions to the total surface area of the wall being at least 10% and at most 60% of the total surface area of each wall in the initial condition, the mean width of the sipe in each locking region being at most 0.6 mm.