[Object] A pneumatic tire 2 which is excellent in durability is provided. [Solution] The tire 2 includes adhesive sheet layers 28. Each adhesive sheet layer 28 includes an interposed portion 58 and a protruding portion 60. The interposed portion 58 is interposed between a base layer 32 and a cap layer 34 of a tread 4. The protruding portion 60 is layered over a carcass 12. The adhesive sheet layers 28 are obtained by a rubber composition being crosslinked. The rubber composition contains a tackifier. A width W1 of the interposed portion 58 is preferably greater than or equal to 5 mm, and preferably not greater than 20 mm. A width W2 of the protruding portion 60 is preferably greater than or equal to 10 mm, and preferably not greater than 20 mm. A thickness of each adhesive sheet layer 28 is preferably greater than or equal to 0.5 mm, and preferably not greater than 2.0 mm. A ratio of an adhesive strength of each adhesive sheet layer 28 to an adhesive strength of the cap layer 34 is preferably greater than or equal to 1.30.

A pneumatic tire includes a lug groove disposed outermost in a tire lateral direction in a tread portion, the lug groove opening outward in the tire lateral direction; a projection portion disposed outward of an opening portion of the lug groove in the tire lateral direction, the projection portion extending outward in a tire radial direction past a groove bottom of the lug groove at maximum groove depth and including an end disposed inward of a road contact surface of the tread portion in the tire radial direction, when the pneumatic tire is mounted on a regular rim, inflated to a regular internal pressure, and loaded with 70% of a regular load; and a reinforcing portion disposed at least at a base end of the projection portion, the reinforcing portion having a JIS-A rubber hardness greater than that of a rubber material around the projection portion.

A high traction motorcycle tire that provides more traction and greater stability than a traditional motorcycle tire. The high traction motorcycle tire includes a motorcycle tire tread having a pair of outer edges, the motorcycle tire tread is adapted to make direct contact with an exterior road surface while the high traction motorcycle tire is riding and an exterior raised rim is disposed on each of the pair of outer edges of the motorcycle tire tread, the exterior raised rim having a lower edge. The lower edge of the exterior raised rim extends outward at the range of 91 to 94 degrees to provide more contact with the exterior road surface than a traditional motorcycle tire while adapted to make a partial turn or a full turn.

The present invention is directed to pneumatic tire having a tread comprising a tread base layer and an outer cap layer disposed radially outward of the base layer, the outer cap layer comprising an axially central zone and two lateral zones each disposed axially adjacent to the central zone; the central zone comprising a central zone composition and lateral zones each comprising a lateral zone composition; the central zone composition and the lateral zone composition each comprising, based on 100 parts by weight of elastomer (phr), from about 50 to about 90 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) ranging from 65 C. to 55 C. and functionalized with an alkoxysilane group and at least one functional group selected from the group consisting of primary amines and thiols; from about 50 to about 10 phr of polybutadiene having a cis 1,4 content greater than 95 percent and a Tg ranging from 80 to 110 C.; from 100 to 180 phr of precipitated silica; and from 30 to 80 phr of a combination of a resin having a Tg of at least 30 C. and an oil wherein the weight ratio of the amount of silica to the total amount of resin and oil is less than 3; wherein the weight ratio of resin to oil in one of the central zone composition and lateral zone composition is greater than 2, and the weight ratio of resin to oil in the other of the central zone composition and lateral zone composition is less than 2.

A pneumatic vehicle tire has a nominal tire cross-sectional height H of at most 110 mm, bead regions with bead cores, a radial carcass which runs around the bead cores in the bead regions axially on the inside to axially on the outside forming carcass turn-ups, and side wall regions, which each have a wing profile and a side wall profile. The wing profiles are the only rubber components extending in contact with the radial carcass in the radially outer region of the side wall region. The carcass turn-ups end at a radial height (h.sub.1), determined from a base line, of 15 mm to 65 mm. At least in a region between a radial height (h.sub.2) of 29% of the nominal side wall height and a radial height (h.sub.3) of at least 80% of the height H, the wing profiles are the only rubber components that extend outside the radial carcass.

The invention relates to a pneumatic tire comprising a carcass and a tread located radially outward of the carcass and extending between the tire sidewalls; the tread providing a radially outermost tread running surface; the tread comprising a first tread layer comprising a first rubber compound and a second tread layer comprising a second rubber compound; wherein the second tread layer is located radially adjacent to the first tread layer; wherein the first rubber compound is compositionally distinct from the second rubber compound; wherein the second tread layer comprises one or more integrally formed extensions of the second tread layer extending radially outwardly toward the tread running surface; wherein each of the integrally formed extensions of the second tread layer comprises a circumferentially continuous groove and a reinforcement zone disposed on a side of the groove; wherein the first rubber compound comprises 100 parts by weight of at least one diene based elastomer, and from 1 to 150 phr of silica; and the second rubber compound comprises a diene base elastomer, from 50 to 120 phr of a filler, wherein at least 20 phr of the filler is a high surface area carbon black having an iodine adsorption number of at least 100 g/kg, from 1 to 45 phr of a methylene acceptor, from 1 to 25 phr of a methylene donor, and from 1 to 30 phr of at least one additive selected from the group consisting of carbamic resins, liquid diene based polymers having a number average molecular weight ranging from 1000 to 25000, and aromatic hydrocarbon resins.

A tire has a cap rubber formed of nonconductive rubber and forms a ground surface, and a conductive portion provided in at least one side end portion of a pair of side end portions in both ends in a tire width direction. The conductive portion is formed of a conductive rubber, and reaches a side surface of the cap rubber from the ground surface through an inner portion of the cap rubber. The conductive portion is relatively small in a thickness in the ground surface and a side surface of the cap rubber, is relatively large in the maximum thickness of an intermediate portion between the ground surface and the side surface of the cap rubber, and is formed into a crescent shape which is curved into an inner side in a tire width direction and an inner side in a radial direction, in a tire meridian cross section.

A tire has a cap rubber formed of nonconductive rubber and forms a ground surface, and a conductive portion provided in at least one side end portion of a pair of side end portions in both ends in a tire width direction. The conductive portion is formed of a conductive rubber, and reaches a side surface of the cap rubber from the ground surface through an inner portion of the cap rubber. The conductive portion is relatively small in a thickness in the ground surface and a side surface of the cap rubber, is relatively large in the maximum thickness of an intermediate portion between the ground surface and the side surface of the cap rubber, and is formed into a crescent shape which is curved into an outer side in a tire width direction and an outer side in a radial direction, in a tire meridian cross section.

When the passenger-vehicle pneumatic radial tire of the disclosure is assembled to a rim and filled with an internal pressure of 250 kPa or more, an SW/OD ratio is 0.26 or less if the tire has a sectional width SW of less than 165 (mm), whereas a sectional width SW and an outer diameter OD (mm) of the tire satisfy a relation of 2.135SW+282.3OD if the tire has a sectional width SW of 165 (mm) or more, a dynamic storage modulus E at 30 C. of the tread rubber is 6.0 MPa to 12.0 MPa and a loss tangent tan at 60 C. of the tread rubber is 0.05 to 0.15, and a dynamic storage modulus E at 30 C. of the buttress rubber is or less, and a loss tangent tan at 60 C. of the buttress rubber is 0.1 or less.

A pneumatic tire has a conductive portion formed by a conductive rubber is provided in the tread rubber formed by a nonconductive rubber. The conductive portion has an outer skin portion and a projection portion. The outer skin portion is formed on a surface of the tread rubber, and extends to an inner side in a tire width direction from a side surface of the tread rubber so as to terminate at a position which goes beyond a contact end. The projection portion spirally extends from a position in an outer side than contact end so as to reach a position in an inner side in the tire width direction than the contact end, and protrudes to an inner side in a tire diametrical direction from the outer skin portion so as to terminate without reaching a bottom surface of the tread rubber.