A pneumatic tire includes a belt having an intersecting belt with a wide belt layer, a narrow belt layer, and a reinforcing layer between the wide belt layer and the narrow belt layer. A widthwise inner end of the reinforcing layer is on an inner side of the narrow belt layer, a widthwise outer end of the reinforcing layer is on an outer side of the narrow belt layer but on the inner side of the wide belt layer; core-sheath type composite fibers, whose core portion is composed of a high-melting-point resin having a melting point of 150 C. or higher and sheath portion composed of resin material containing an olefin-based polymer having a melting point not higher than tire vulcanization temperature, are embedded in the reinforcing layer; and an angle of the core-sheath type composite fibers is substantially the same as a reinforcing cord of the narrow belt layer.

A pneumatic tire of the present disclosure comprises a resin-coated belt, a base ring that comes in contact with a tire widthwise outer end of the resin-coated belt is provided on a tire radial inside of the resin-coated belt, the base ring has a tire widthwise outer end located on an outer side of the tire widthwise outer end of the resin-coated belt in a tire width direction, and comprises an auxiliary belt that covers a tire radial outside of the base ring in a tire widthwise region from the tire widthwise outer end of the resin-coated belt to at least a part of a tire widthwise outside, and that covers a tire radial outside of the resin-coated belt in a tire widthwise region from the tire widthwise outer end of the resin-coated belt to at least a part of a tire widthwise inside.

A pneumatic tire includes a carcass, a tread portion and a belt layer having a first inclined belt ply, circumferential direction belt ply, and second inclined belt ply. Ground contact edge side belt plies extend from tire width direction end portions of the second inclined belt ply toward tire width direction outsides, at a tire radial direction outside of the carcass. With respect to a tire circumferential direction, an angle of cords of the first inclined belt ply is from 45 to 60, an angle of a cord of the circumferential direction belt ply is 5 or less, an angle of cords of the second inclined belt ply is from 30 to 60, and an angle of cords of the ground contact edge side belt plies exceeds 5 and is 30 or less. A distance dimension of the ground contact edge side belt plies is 80% or more of a ground contact width.

A pneumatic tire is provided. A bead filler is disposed on an outer circumferential side of each bead core in bead portions, a side reinforcing layer having a crescent-shaped cross-section is disposed on an inner side in a tire width direction of a carcass layer in a sidewall portion, and as physical properties of a rubber that constitutes the side reinforcing layer and a rubber that constitutes the bead filler, a modulus at 100% elongation is in a range from 8.4 MPa to 10.2 MPa, a tan at 60 C. is in a range from 0.04 to 0.08, and JIS hardness at 20 C. is in the range from 75 to 79.

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 pair of annular beads, a body ply extending between the pair of annular beads, and at least three steel belt layers disposed above the body ply and extending axially across a portion of the body ply. The tire further includes at least one reinforcement layer disposed above the at least three steel belt layers, a circumferential tread disposed above the at least one reinforcement layer and extending axially across the tire, and a pair of sidewalls extending between each of the pair of annular beads and a pair of shoulders associated with the circumferential tread.

A tire comprises two working crown layers of reinforcing elements and, in each shoulder, an end of a layer of parallel reinforcing elements oriented circumferentially, said end being axially outside the working crown layers. The reinforcing elements have a diameter less than 1 mm and comprise threads with a diameter strictly greater than 0.16 mm, and, in a radial plane, the ratio between the thicknesses of rubber compound between the inner surface of the tire cavity and that point of a metal reinforcing element of the carcass reinforcement that is closest to said inner surface of the cavity, of the two parts of the tire profile that are centered on the respective orthogonal projections onto the inner surface of the tire cavity of the axially outer ends of said additional layers, and of the parts of the tire profile that have the smallest thicknesses, being greater than 1.15.

In a pneumatic tire, a tread rubber includes a recessed portion extending along a tire-circumferential direction, the recessed portion being placed at a position of a tire-outer surface superposed on an end of the belt portion or at a position of a tire-outer surface on an outer side in a tire-width direction than the former position of the tire-outer surface, an outer wound-up portion is placed closer to a belt portion than an inner wound-up portion, the outer wound-up portion is separated from the belt portion to prevent the outer wound-up portion from being superposed on the belt portion, and the outer wound-up portion is superposed on the recessed portion.

A run-flat radial tire is provided that has a tire cross-section height of 115 mm or greater includes a carcass spanning between a pair of bead portions, a side reinforcing rubber layer that is provided to a tire side portion and that extends in a tire radial direction along an inner face of the carcass, and at least one inclined belt layer that is provided at a tire radial direction outside of the carcass and includes cord extending in a direction inclined with respect to a tire circumferential direction. At least at one end portion side in the tire axial direction of a maximum width inclined belt layer having the largest width in the tire axial direction, the maximum width inclined belt layer and the side reinforcing rubber layer have an overlap width in the tire axial direction of 22.5% or greater of the tire cross-section height.

A tire includes a tire frame member made of a resin material; a top tread disposed outside the tire frame member in a tire radial direction; a belt layer disposed between the tire frame member and the top tread, the width dimension BW of the belt layer in a tire axial direction being in a range of from 85 to 105% of the ground width dimension TW of the top tread; and a belt reinforcement layer disposed at end portions of the belt layer in a tire width direction, the belt reinforcement layer having lower stiffness than the belt layer.