Abstract: To provide a pneumatic tire 34 in which weight reduction is achieved without deteriorating internal pressure maintaining performance. The tire 34 includes a liner 46 located inward of a carcass 42. The liner 46 includes a first inner liner 66 extending on and between one of beads and the other of the beads and along and inward of the carcass 42; and a pair of second inner liners 68 extending from ends 62a of a belt 44, respectively, along the first inner liner 66 substantially inward in a radial direction. The second inner liners 68 are located between the first inner liner 66 and the carcass 42. The first inner liner 66 is formed by a first rubber composition being crosslinked. A base rubber of the first rubber composition includes a butyl rubber. Each second inner liner 68 is formed by a second rubber composition being crosslinked. A base rubber of the second rubber composition includes a diene rubber.

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 tire for running on rough terrain comprises a tread portion provided with center blocks, middle blocks and shoulder blocks to form a block tread pattern, wherein some or all of the center blocks are each provided with a slot positioned at the midpoint of the block in the tire circumferential direction, and extending axially inwardly from a sidewall surface of the block oriented toward a tread edge, and terminating within the block.

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: 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: [Object] To provide a pneumatic tire 34 in which weight reduction is achieved without deteriorating internal pressure maintaining performance. [Solution] The tire 34 includes a liner 46 located inward of a carcass 42. The liner 46 includes a first inner liner 66 extending on and between one of beads and the other of the beads and along and inward of the carcass 42; and a pair of second inner liners 68 extending from ends 62a of a belt 44, respectively, along the first inner liner 66 substantially inward in a radial direction. The second inner liners 68 are located between the first inner liner 66 and the carcass 42. The first inner liner 66 is formed by a first rubber composition being crosslinked. A base rubber of the first rubber composition includes a butyl rubber. Each second inner liner 68 is formed by a second rubber composition being crosslinked. A base rubber of the second rubber composition includes a diene rubber.

Abstract: A pneumatic tire for running on rough terrain comprises a tread portion provided with center blocks, middle blocks and shoulder blocks to form a block tread pattern, wherein some or all of the center blocks are each provided with a slot positioned at the midpoint of the block in the tire circumferential direction, and extending axially inwardly from a sidewall surface of the block oriented toward a tread edge, and terminating within the block.