Patent ID: 7225844

Claim:
A tread made of elastomeric material for tires, this tread being provided with a plurality of incisions, each incision of average width e and of average surface Sm being defined by facing walls, wherein at least one of the walls defining each incision comprises at least first and second series of lines of motifs in relief relative to said wall and having a maximum height measured perpendicular to said wall at least equal to 1/10 of the width e, and in that at least one of the walls defining each incision furthermore comprises over its entire surface an average roughness of between 1/100 and 1/10 of the width e of the incisions, wherein the first and second series of lines of motifs in relief have a maximum height measured perpendicular to said wall at least equal to 1/10 of the width e, each series of lines comprising a plurality of lines extending in substantially the same direction, the lines of the first series intersecting and passing through the lines of the second series to form closed recesses therebetween.