RADIAL TIRE FOR MOTORCYCLE

PURPOSE:To reduce the difference in rigidity at both side edges of a band layer by superimposing a band layer of multilayer structure where the long and narrow band body with a band cord is wound in multiple spirals, on the outside of a belt layer arranged between a tread and a carcass layer. CONSTITUTION:On the belt layer 7 arranged outside a carcass 6 in its radial direction, the reinforcing band layer 10 spiral-wound by the long band body 12 where band cords are arranged parallel to each other is produced and superimposed, centering the equator of a tire. At this time, the band layer 10 is made into the multilayer structure which is formed by winding in multiple spirals the long and narrow body 12 with the length of 0.2-0.6 time the width W of a tread 2 within the range of a spiral pitch d of 5-20mm and with a overlapping portion 13. This constitution decrease the number of layers for the band layer 10 toward both side edges and makes the surface contour of the tread 2 a smooth arc-shaped one of single-curvature with no inflection point.