A pneumatic tire includes a tread portion; sidewall portions disposed on both sides of the tread portion; a pair of bead portions positioned inward of each of the sidewall portions in a tire radial direction; at least one layer of carcass spanning between the pair of bead portions; and an organic fiber reinforcement layer that is provided to at least one of the sidewall portions and is made of an organic fiber material are provided. The organic fiber reinforcement layer is provided closer to a tire outer surface than the carcass at a position within a range from 50% or greater to 90% or less of a tire cross-sectional height toward an outer side in a tire radial direction from an inner end portion of the bead portion in a tire radial direction.

A tire whose pressure-proofing performance and impact durability can be improved, is provided. The tire includes: a tire frame member which is made of resin and includes: a bead portion covering a bead core; a side portion extending outwardly in a tire radial direction from the bead portion; and a crown portion extending inwardly in a tire width direction from the side portion, and the tire also includes a reinforcing layer which includes plural cords covered by resin or rubber and which extends from the bead portion to the side portion of the tire frame member to cover at least an inner peripheral surface of the side portion.

Provided is a pneumatic tire including: a pair of bead portions; and a carcass including one or more carcass plies of radially arranged cords that extend in a toroidal form between the pair of bead portions, wherein a reinforcing member is provided so as to extend at an angle with respect to a tire radial direction in an area including a tire maximum width position of the pneumatic tire that stretches in the tire radial direction on an outer side in a tire width direction of the carcass in a reference state.

Provided is a bias tire includes a carcass extending between a pair of bead portions, a pair of sidewall portions, a tread, and a reinforcement layer (5), formed by cords (5Cb), disposed so as to cover at least a portion of a tire circumferential edge (BEi) on the inner side, in the tire radial direction, of the innermost ply (2Bi) of the carcass in a tire half portion (HFa) on a side where, as a cord (Cb) of a tire circumferential end on the inner side, in the tire radial direction, of the innermost ply (2Bi) approaches the tire circumferential edge on the inner side, in the tire radial direction, of the innermost ply (2Bi) along the tire circumferential direction, the cord (Cb) is inclined so as to separate from the tire equator (CL).

Provided is a pneumatic tire in which, by improving adhesion between a rubber and fibers for a reinforcing layer that is arranged in such a manner to extend from a tire radial-direction inner side of a belt layer in an end region of a tread portion toward an inner side of a tire radial direction along a carcass ply, not only the durability is further improved as compared to conventional tires but also the rolling resistance is reduced. The pneumatic tire includes: at least one carcass ply (2); and at least one belt layer (3) arranged on a tire radial-direction outer side of the carcass ply (2) in a crown portion, in which pneumatic tire a reinforcing layer (4) extending from the tire radial-direction inner side of the belt layer in the end region of the tread portion toward the inner side of the tire radial direction along the carcass ply is arranged, and core-sheath type composite fibers (C), whose core portion is composed of a high-melting-point resin (A) having a melting point of 150 C. or higher and sheath portion is composed of a resin material (B) that contains an olefin-based polymer (D) having a melting point of not higher than a tire vulcanization temperature, are embedded in the reinforcing layer.

A tire includes: a tread portion including a tread surface; a pair of sidewall portions that extend inward in a tire radial direction from both sides of the tread portion in a tire width direction; and a pair of bead portions each of which includes a bead core that is elongated continuously to an inside of the sidewall portion in the tire radial direction and extends continuously in an annular shape in a tire circumferential direction, and a bead filler disposed adjacent to the bead core and outside the bead core in the tire radial direction. A density of the reinforcing cords changes in a range from 20% inclusive to 60% inclusive of a tire sectional height from a tire inner end in the tire radial direction, and such that an outside of an area, in which the density changes, has a low density of the reinforcing cords.

A tire includes a tread portion, a sidewall portion, and a bead portion. The bead portion includes a bead core that extends continuously in an annular shape in a tire circumferential direction, and a bead filler disposed adjacent to the bead core and outside the bead core in a tire radial direction. Reinforcing cords are provided in the bead portion and the sidewall portion so as to be curved such that inclination angles of the reinforcing cords with respect to the tire circumferential direction gradually increase with nearness to an outside in the tire radial direction.

A pneumatic tire has a pair of bead portions, a pair of side wall portions which extend from the bead portions to an outer side in a tire diametrical direction, a tread portion which is connected to an outer side end of each of the pair of side wall portions in the tire diametrical direction, a plurality of projections which are provided in a buttress region of the side wall portions along a tire circumferential direction; and a plurality of spews which protrude out of surfaces of the projections. In each of a plurality of sides forming a periphery of the surfaces of the projections, in the case that rectangular areas having a distance from the side being in a range of 2.5 mm or less are defined on the surfaces of the projections, at least one spew is provided in each of the rectangular areas.

An object of the present invention is to provide: a rubber-fiber composite obtained by coating a core-sheath fiber with a rubber, in which adhesion between the rubber and the fiber is improved and which is thereby allowed to exhibit an improved durability as compared to conventional rubber-fiber composites when used as a reinforcing material; a rubber-resin composite; and a pneumatic tire using the same. The rubber-fiber composite is obtained by coating a reinforcing material with a rubber, which reinforcing material is composed of a core-sheath type composite fiber whose core portion is constituted by a high-melting-point resin having a melting point of 150 C. or higher and sheath portion is constituted by an olefin-based polymer having a melting point lower than that of the high-melting point resin.

A tire comprises: a tire frame member made of resin and including a bead portion and a side portion positioned on a tire radial direction outer side of the bead portion; and a reinforcing layer including an organic fiber and a resin material with which the organic fiber is coated, wherein the organic fiber comprises: a cord member including at least one of an aramid fiber material or a polyester fiber material; an undercoat layer provided on the cord member and formed from a first composition including at least one of an epoxy compound or an isocyanate compound; and an adhesive layer provided on the undercoat layer and formed from a second composition including a resorcinol-formaldehyde resin.