One embodiment of the present invention provides a rubber reinforcement material which comprises a fiber substrate, an adhesive layer disposed on the fiber substrate, a rubber compound layer disposed on the adhesive layer, and resorcinol-formaldehyde-latex (RFL), wherein the rubber compound layer has a thickness of 5 m to 200 m.

A tire includes a circular tire case formed from a resin material, a belt provided at an outer side in a tire radial direction of the tire case and configured by covering a reinforcing cord by a covering resin, the reinforcing cord being provided with an adhesion layer at an outer periphery thereof, and a tread provided at an outer periphery of the belt and configured from a rubber material. The belt has a gauge set within a range of from 1.15 mm to 2.0 mm. A relationship A>B is satisfied, wherein A is a thickness of the covering resin layer from the reinforcing cord to an outer circumferential surface of the belt and B is a thickness of the covering resin layer from the reinforcing cord to the tire case. A combined gauge of the tire case and the belt is not greater than 3.5 mm.

A pneumatic tire of the present disclosure includes a tread portion, sidewall portions, bead portions, a carcass, and an inner liner layer. The carcass includes a plurality of carcass cords and a topping rubber layer. The inner liner layer includes a butyl rubber layer and an adhesive rubber layer. An electronic module is disposed between the carcass and the adhesive rubber layer. The electronic module includes an electronic component and a cover rubber. The cover rubber includes an inner layer and an outer layer. The electronic component is covered between the inner layer and the outer layer of the cover rubber.

In a tire, a tire outer diameter OD is in a range 200 mmOD660 mm. A total tire width SW is in a range 100 mmSW400 mm. A carcass layer is formed by layering two layers of carcass plies formed by covering organic fiber cords with coating rubbers. The organic fiber cords of the two layers of the carcass plies have cord angles in a range of 80 degrees or more and 100 degrees or less with respect to a tire circumferential direction. A tensile strength Tcs per a width of 50 mm of each of the two layers of the carcass plies (13A, 13B) is in a range 17 N/mmTcs/OD120 N/mm with respect to the tire outer diameter OD.

A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the portions, and an inner rubber extending between the portions, on the inner side of the carcass.

The inner rubber comprises a first portion extending through the tread portion with a first thickness and a second portion extending through the sidewall portions with a second thickness smaller than the first thickness. The land ratio of the tread portion 2 is 65% or more.

A tire can include a pair of beads, a carcass, an inner liner, and an insulation located between the carcass and the inner liner. The carcass can include one carcass ply. The carcass ply can include a plurality of carcass cords and a topping rubber. Each carcass cord can have a total fineness of not less than 6000 dtex and not greater than 9000 dtex. The insulation can be located between first and second beads. A ratio (ta/td) of a thickness to of the topping rubber located between the insulation and the carcass cords to a thickness td of the insulation can be not less than 0.2 and not greater than 0.6.

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.

A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the portions, and an inner rubber extending between the portions, on the inner side of the carcass.

The inner rubber comprises a first portion extending through the tread portion with a first thickness and a second portion extending through the sidewall portions with a second thickness smaller than the first thickness. The land ratio of the tread portion 2 is 65% or more.

A tire including: a circular tire frame containing a resin material; and a metal-resin complex wound around an outer circumferential portion of the tire frame, which includes a metal member, an adhesive layer and a resin layer in this order, and in which a tensile elastic modulus of the adhesive layer is less than a tensile elastic modulus of the resin layer.

The present invention provides a pneumatic tire having excellent durability. Provided is a pneumatic tire including at least one steel belt layer, at least one cap ply layer, and at least one carcass layer, the steel belt layer including a steel belt topping rubber composition which has a zinc oxide content of 8.0 parts by mass or more per 100 parts by mass of the rubber component, the cap ply layer including a cap ply topping rubber composition, the carcass layer including a carcass topping rubber composition, the cap ply topping rubber composition and the carcass topping rubber composition both having stearic acid and zinc oxide contents, each per 100 parts by mass of the rubber component, which satisfy the following relationships (1) and (2):

stearic acid content3.0 parts by mass,(1):

stearic acid content/zinc oxide content0.5.(2):