Abstract: A motorcycle tire includes a tread portion including a crown portion that is a region of 50% of a tread development width centered on a tire equator, a first shoulder portion that is an outer region of the crown portion, and first lateral grooves. Each lateral groove includes a first groove portion in the crown portion, a second groove portion in the first shoulder portion, and a third groove portion connecting the first and second groove portions. A groove depth and a groove width of the third groove portion are respectively smaller than groove depths and groove widths of the first groove portion and the second groove portion, respectively. More than 80% of a tire axial length of the third groove portion is in the first shoulder portion.

Abstract: A bias-ply motorcycle tire comprises a tread portion provided with main grooves and sipes. The main grooves extend from a tread crown region into tread shoulder regions. The sipes are provided only within the tread shoulder regions.

Abstract: A pneumatic radial tyre includes a plurality of shoulder lateral grooves crossing shoulder lard regions. In a cross-sectional view of at least one of the shoulder lateral grooves taken along a groove width center line thereof, a groove bottom of the shoulder lateral groove includes a first bottom surface portion arranged on an inner side in a tyre axial direction and a second bottom surface portion extending between the first bottom surface portion and the tread surface outer end in a concave arc shape having a radius of curvature.

Abstract: A tire 1 for a motorcycle comprises a tread portion 2 provided on an inner surface 2Si thereof with a sealant layer 11 for preventing puncture. In each half of a cross-sectional view of the tire 1, when the tread portion 2 is virtually divided into a center region 2C, a middle region 2M, and a shoulder region 2S, a thickness tm of the sealant layer 11 in the middle region 2M is larger than a thickness tc of the sealant layer 11 in the center region 2C.

Abstract: The pneumatic tire 1 for a motorcycle comprises a tread portion 2 comprising a belt layer 7, an inner liner layer 9 made of air impermeable rubber and arranged radially inside the belt layer 7, and a sealant layer 10 attached to a radially inner surface (9a) of the inner liner layer 9. The sealant layer 10 comprises a crown portion 10A arranged at a center thereof in a tire axial direction and a pair of shoulder portions 10B arranged on both sides of the crown portion 10A in the tire axial direction. Viscosity ?2 of the shoulder portions 10B is larger than viscosity ?1 of the crown portion 10A.

Abstract: A pneumatic tire excellent in high speed stability and turning ability is provided. In a band of a tire, a center portion located in an axial center has a helically wound structure in which a first band body including a first cord is wound. A shoulder portion located on an axial outside of the center portion has a meshed structure formed by a second band body including a second cord. The shoulder portion includes a plurality of first portions, a plurality of second portions and a plurality of third portions. Each first portion is inclined and extends from an axially inner end of the shoulder portion to an axially outer end of the shoulder portion. Each second portion is inclined in an opposite direction from the first portion and extends from the axially inner end of the shoulder portion to the axially outer end of the shoulder portion.

Abstract: A pneumatic radial tyre includes a plurality of shoulder lateral grooves crossing shoulder lard regions. In a cross-sectional view of at least one of the shoulder lateral grooves taken along a groove width center line thereof, a groove bottom of the shoulder lateral groove includes a first bottom surface portion arranged on an inner side in a tyre axial direction and a second bottom surface portion extending between the first bottom surface portion and the tread surface outer end in a concave arc shape having a radius of curvature.

Abstract: The purpose of the present invention is to provide a motorcycle tire for uneven ground travel for which the sticking of dirt to block grooves can be effectively prevented. Provided is a motorcycle tire for uneven ground travel in which a tread portion has a block pattern in which a plurality of blocks are provided. The blocks include, at the tread surface, at least one grooved block which has a block groove which is substantially C-shaped in plan view. The block groove has a pair of first groove portions that mutually extend in the same direction from the edge of the tread surface, and a second groove portion that links the first groove portions. The groove width W2 of the second groove portion is larger than the groove width W1 of the first groove portions, or the groove depth d2 of the second groove portion is larger than the groove depth d1 of the first groove portions.

Abstract: 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.

Abstract: [Object] A motorcycle tire, for an uneven terrain, which exhibits both impact absorption and handling stability is provided. [Solution] A tire 2 includes a pair of rubber reinforcing layers 14 disposed inward of a carcass 10 near ends, respectively, of a tread surface 16. A profile of the tread surface 16 is formed by: an arc C1 that is disposed at a center, and that projects outward in a radial direction; and a pair of arcs C2 each of which is disposed outward of the arc C1 in an axial direction and each of which projects outward in the radial direction. The arc C1 contacts with the arcs C2. A radius R1 of curvature of the arc C1 is less than a radius R2 of curvature of each arc C2. Outer ends 40 of the rubber reinforcing layers 14 are disposed outward of ends TE of the tread surface 16 in the radial direction. Inner ends 42 of the rubber reinforcing layers 14 are disposed inward of the ends TE of the tread surface 16 in the radial direction.

Abstract: A tire 1 for a motorcycle comprises a tread portion 2 provided on an inner surface 2Si thereof with a sealant layer 11 for preventing puncture. In each half of a cross-sectional view of the tire 1, when the tread portion 2 is virtually divided into a center region 2C, a middle region 2M, and a shoulder region 2S, a thickness tm of the sealant layer 11 in the middle region 2M is larger than a thickness tc of the sealant layer 11 in the center region 2C.

Abstract: The pneumatic tire 1 for a motorcycle comprises a tread portion 2 comprising a belt layer 7, an inner liner layer 9 made of air impermeable rubber and arranged radially inside the belt layer 7, and a sealant layer 10 attached to a radially inner surface (9a) of the inner liner layer 9. The sealant layer 10 comprises a crown portion 10A arranged at a center thereof in a tire axial direction and a pair of shoulder portions 10B arranged on both sides of the crown portion 10A in the tire axial direction. Viscosity ?2 of the shoulder portions 10B is larger than viscosity ?1 of the crown portion 10A.