Tire with a directional tread comprising curved blocks with chamfers

A tire comprising:

• a directional tread, said tread comprising:
• two edges;
• a centre;
• a plurality of blocks, each said block extending continuously along an overall curvature C from one of the edges towards the centre of said tread, forming a block central end, each said block having a width WB and a length LB, said width increasing from the block central end in the direction of the edge, all or some of the blocks of the tread comprising a median sipe of length S, said median sipe extending along a curvature C′ substantially identical to the curvature C of the block,
• wherein each said block comprises:
• a central zone at an angle β1 with respect to the transverse direction such that 35°≤β1≤65°,
• an edge zone at an angle β3 such that 0°≤β3≤10°, and
• an intermediate zone between the central zone and the edge zone at an angle β2, and
• wherein at least one block comprises a block chamfer provided at the leading edge and/or the trailing edge of the block in said intermediate zone and/or said edge zone, and wherein said central zone does not have a chamfer,
• wherein the at least one block comprises a block chamfer provided at the leading edge and/or the trailing edge of the block in said intermediate zone.