A pneumatic tire having a sidewall cover layer for application of a printing ink and/or paint is provided. In one embodiment, the tire comprises: a sidewall portion including a cushion layer and a cover layer, wherein the cover layer is oriented axially outwardly of the cushion layer, wherein the cover layer is bonded to the cushion layer, wherein the cover layer is formed from a material that contains wax in a concentration of less than 0.03 pph, and wherein the cushion layer does not contain a wax.

Provided is a tire that prevents a polyurethane foam layer from discoloring to brown. A tire comprises: a polyurethane foam layer laminated on an outer layer of the tire with a barrier layer therebetween, wherein the polyurethane foam layer contains a polyurethane foam, and the barrier layer is formed from a rubber composition containing butyl rubber as a rubber component.

In a tire 2, each of sidewalls 6 includes a first layer 36 disposed axially outward of a corresponding one of beads 8, and a second layer 38 extending outward from the first layer 36 in a radial direction. When Pc represents a position of an axially outer end of an interface between a carcass 10 and the sidewall 6, an outer end 40 of the first layer 36 is disposed radially inward of the position Pc. A hardness H1 of the first layer 36 is greater than a hardness H2 of the second layer 38. A ratio (H2/H1) of the hardness H2 to the hardness H1 is preferably not less than 0.70 and preferably not greater than 0.95.

A pneumatic tire can include a tread portion, a pair of sidewall portions, a pair of bead portions, and a carcass. At least one of the sidewall portions can include a first sidewall rubber. The first sidewall rubber can include a base rubber layer, a different color rubber layer, and a barrier rubber layer. The base rubber layer can be in contact with the carcass. At least a part of the different color rubber layer can be exposed in the outer surface of the at least one of the sidewall portions. The barrier rubber layer can be arranged between the different color rubber layer and the base rubber layer. The barrier rubber layer can have a rubber compounding to suppress migration of rubber compounding agents on the base rubber layer side to the different color rubber layer. The barrier rubber layer can have a thickness of 1.0 mm or less.

A pneumatic tire can include a tread portion, a pair of sidewall portions, bead portions, and a carcass. At least one sidewall portion can include a first sidewall rubber arranged outside the carcass in a tire axial direction. The first sidewall rubber can include a different color rubber layer and a barrier rubber layer. The different color rubber layer can have a color different from a basic color of an outer surface of the at least one sidewall portion. At least a part of the different color rubber layer can be exposed in the outer surface of the at least one sidewall portion. The barrier rubber layer can be arranged between the different color rubber layer and the carcass. The barrier rubber layer can include a first portion having a rubber compounding to suppress migration of rubber compounding agents on the carcass side to the different color rubber layer.

A radial tire (10) for a heavy vehicle of construction plant type, and more particularly, the sidewalls thereof (20), arranged to minimize the temperature of the tire while guaranteeing its electrical conductivity. The tread (30) comprises two tread wings (31) and a central portion (32). The bead layer (71), the elastomeric coating compound of the carcass layer (50), the second sidewall layer (22) and the tread wing (31) constitute a preferential conductive pathway of the electric charges between the rim and the ground when the tire is mounted on its rim and flattened on the ground.

A protrusion portion (110) of a pneumatic tire is formed by a plurality of protrusion parts (111) extended along a tire circumferential direction. The protrusion parts (111) are arranged with predetermined gaps therebetween so as to form a circle along the tire circumferential direction. A length (S1) of the protrusion part (111) in the tire circumferential direction is larger than a maximum width (W1) of the protrusion part (111) in a tire radial direction. In a tire side view, a narrow groove (200) extended along the tire circumferential direction is formed on a surface (111s) of the protrusion part (111).

A pneumatic tire includes a pair of bead cores; a pair of bead fillers; a carcass ply; a side wall rubber; a chafer layer that is rolled up on an outer surface of the carcass ply; and a pair of support rubbers that is located between the side wall rubber and the carcass ply and arranged such that a rolled-up end of the chafer layer is sandwiched from both sides in a tire width direction. The pair of support rubbers includes a tape rubber located inside in the tire width direction and a rear pad rubber located outside in the tire width direction. A modulus value of the tape rubber is higher than a modulus value of the side wall rubber. A modulus value of the rear pad rubber is higher than the modulus value of the tape rubber.

A tire comprises sidewalls (2), a crown region (3) provided with a tread (4), and a reinforcing structure (5) extending between the sidewalls (2) and passing via the crown region (3). At least one portion of the region of the tire that is axially inside the reinforcing structure (5) comprises an insert (6) comprising a first elastomer composition serving as a matrix, within which a second elastomer composition originating from recycled tires is distributed substantially uniformly, the proportion of said second elastomer composition being greater than or equal to 40%.

A pneumatic tire is provided with a carcass layer and a sidewall rubber disposed on an outer side in a tire width direction of the carcass layer. Additionally, the pneumatic tire is provided with a resin coating applied on a predetermined region of a sidewall portion. Additionally, a minimum value of a wall thickness t of a rubber of the sidewall portion in the region applied with the resin coating is in a range of 0.05 mm≤t≤4.0 mm. Additionally, a thickness of the resin coating is in a range of 20 μm or more and 300 μm or less.