PNEUMATIC RADIAL TIRE FOR HEAVY LOAD

摘要

PURPOSE: A pneumatic radial tire of a heavy load is provided to lengthen durability of a tire by preventing partial wear, improving braking and driving force and preventing separation. CONSTITUTION: A pneumatic radial tire of heavy load has a tread pattern to be composed of a center groove(G2); a center block(K2); a shoulder groove(G1); a shoulder block(K1) and two sipes(1,2). The center groove is formed along a center line(C) in the middle of the tread. The center block, the shoulder groove and the shoulder block are formed in opposite by an axis of the center groove. Two sipes are formed between the center block and a transverse groove(3). The center block is near the transverse groove. The end portions of the center block are opened to the shoulder groove and the center groove respectively. Therefore, partial wear like railway wear is prevented and separation by heat of traveling is repressed.