The invention relates to a tire tread comprising a plurality of blocks (3) made of rubber material, which are formed on both sides of a mid-plane (5) separating said tread (1) into two portions. Each block (3) continuously extends from the mid-plane to the outside of the tread. Each block is defined by two grooves (7, 9) which lead to a first edge (8) of the tread and have a curvature C, and by a third groove (11) which extends from the first groove (7), at the mid-plane (5) of the tread, to a second edge (10) of said tread that is opposite the first edge (8), the second groove (9) leading into said third groove (11).