MOTORCYCLE TIRE FOR TRAVELING ON ROUGH TERRAIN AND TIRE VULCANIZATION MOLD

摘要

To provide a motorized two-wheeled vehicle tire for traveling on uneven terrain, the block durability performance of which has been improved; and a tire vulcanization mold capable of molding said tire. A motorized two-wheeled vehicle tire for traveling on uneven terrain wherein multiple blocks are provided on the tread at intervals in the tire circumference direction. Recesses are provided on the bottom surfaces of the grooves. Multiple recesses are provided at intervals in the axial direction of the tire. Spew, which was drawn up into the vent holes of the mold during vulcanization molding, or removal marks thereof are provided between each recess and the block that is adjacent in the tire circumference direction.

主权项

1. A motorcycle tire for traveling on rough terrain, the tire comprising:
a tread portion being provided with a plurality of blocks protruding radially outwardly from a groove bottom surface and arranged in a circumferential direction of the tire with a space therebetween; a plurality of recess portions being provided on the groove bottom surface between a pair of circumferentially adjacent blocks, the recess portions arranged in an axial direction of the tire with a space therebetween; and a spew sucked up a vent hole in a mold during vulcanization molding or its excision mark being provided between each recess portion and the block adjacent to the recess portion in the circumferential direction of the tire.