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; and a belt layer disposed between the tire frame member and the top tread, the belt layer constituting of a center area at a middle in a tire width direction and shoulder areas at both sides of the center area in the tire width direction, a width dimension BCW of the center area in a tire axial direction being in a range of from 85 to 105% of a ground width dimension TW of the top tread. In a case in which Hc represents stiffness of the center area, and Hs represents stiffness of the shoulder area, Hc>Hs.

A rubber composition includes: in a diene rubber containing a natural rubber, cobalt borate neodecanoate, a phenol-based resin, and a curing agent; a dynamic storage modulus (E) at 20 C. and a dynamic strain of 2% being 13 MPa or greater; a loss tangent (tan ) at 60 C. being 0.20 or less; and the number of repetitions until breakage in a constant strain fatigue test at a strain of 60% and 400 rpm being 35000 times or greater.

A pneumatic tire includes a belt layer and a carcass layer. A rubber composition for belts, constituting the belt layer, contains, per 100 parts by mass of a diene rubber containing a natural rubber, from 0.3 to 1.5 parts by mass of cobalt borate neodecanoate and from 4.5 to 7.0 parts by mass of sulfur. The dynamic storage modulus at 20? C. of the rubber composition for belts is from 13 to 18 MPa, and a ratio of a 100% tensile stress of the rubber composition for belts to a 100% tensile stress of a rubber composition for carcasses, constituting the carcass layer is from 1.5 to 2.5.

A tire includes a tread portion; a pair of bead portions; a pair of sidewall portions, each of which extend between the tread portion and a respective bead portion; a carcass that extends from one bead portion to the other, through the sidewall portions and tread portion; and an inner surface that defines a tire cavity; wherein the tread portion comprises a belt disposed outside of the carcass in a radial direction of the tire, the belt comprising one or more belt plies that extend in an axial direction of the tire; wherein each sidewall portion comprises an intermediate layer arranged inward in the tire radial direction from the carcass, wherein each intermediate layer comprises an outer edge that overlaps the belt and an inner edge arranged in the sidewall portion or bead portion; wherein the tire further comprises an inner layer arranged inward in the tire radial direction from the tread portion, the inner layer having a thickness in the radial direction defined by the carcass and inner surface; and wherein the thickness of the inner layer is greater than a thickness between the carcass and inner surface in the sidewall portions.

A motorcycle tire set includes a front-wheel tire and a rear-wheel tire. Each of the front and rear-wheel tires includes a carcass, a band layer arranged radially outwardly of the carcass in the tread portion, and a tread rubber arranged radially outwardly of the band layer. The carcass includes a carcass ply including carcass cords. The band layer includes a jointless band ply in which a band cord is circumferentially wound spirally at an angle equal to or less than 5 degrees. The tread rubber includes a crown rubber portion. An angle ?1 of the carcass cords of the front-wheel tire is 65 degrees or more with respect to the tire circumferential direction. A rubber hardness of the crown rubber portion of the rear-wheel tire is greater than a rubber hardness of the crown rubber portion of the front-wheel tire.

A pneumatic tire is provided with at least three circumferential main grooves extending in a tire circumferential direction, and a plurality of land portions defined by the circumferential main grooves. The belt layer is formed by laminating a pair of cross belts having belt angles, as an absolute value, of not less than 10 and not greater than 45 and of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of 5 with respect to the tire circumferential direction. In a cross-sectional view in the tire meridian direction, the distance Dcc from the circumferential reinforcing layer to the terminal wear surface on a tire equatorial plane and the distance De from an end portion of the circumferential reinforcing layer to the terminal wear surface have the relationship such that De/Dcc0.94.

Technique to increase the endurance of tires comprising two crossed working layers (41, 42), comprising mutually parallel reinforcing elements that form, with the circumferential direction (XX) of the tire, an angle which is at least equal to 20 and at most equal to 50. The reinforcing elements are made up of individual metal threads or monofilaments having a cross section which is at least equal to 0.20 mm and at most equal to 0.5 mm. The tire also comprises axially exterior sipes (24) having a mean width W at most equal to 1 mm, of a depth D at least equal to 5 mm and spaced apart, in the circumferential direction (XX), by a circumferential spacing P at least equal to 4 mm, and axially exterior grooves (25) having a mean width W at least equal to 1 mm, of a depth D at most equal to 5 mm.

A pneumatic tire comprises: a carcass layer, a belt layer, and a tread rubber. The belt layer is formed by laminating a pair of cross belts having a belt angle of not less than 10 and not more than 45 in absolute terms and of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of 5 with respect to the tire circumferential direction. A distance (Gcc) from a tread profile to a tire inner circumference surface along a tire equatorial plane, a distance (Gsh) from a tread end to the tire inner circumference surface, and a distance (Ge) from the tread profile to the tire inner circumference surface at an end portion on the outer side of the circumferential reinforcing layer in the tire width direction have relationships satisfying 1.10Gsh/Gcc and 1.00Ge/Gcc1.10.

Pneumatic radial tire (1) having improved high speed durability and low flatspot feature, and which has polyethylene terephthalate cap ply reinforcement layer (6). The objective is to provide a pneumatic radial tire (1) wherein the pressure on the belt package (5) is increased at high speed and high temperature by increasing the thermal shrinkage force of the cap ply cord.

Provided is an airplane pneumatic tire whose durability is increased by improvement in heat build-up. The airplane pneumatic tire includes: a tread section having a plurality of circumferential grooves; a carcass toroidally extending from the tread section to a pair of bead sections through a pair of side wall sections; and a belt composed of at least one belt layer arranged on the outer side of a crown portion of the carcass, wherein, when the maximum width of the belt in the tire width direction is defined as W, a rubber having a 25% modulus at 25 C. of not less than 1.2 MPa is arranged in regions of at least 0.2W from each outermost end of the belt toward the tire width direction inner side in the tread section.