Provided is a pneumatic tire for motorcycles, which not only has satisfactory durability but also exhibits satisfactory grip performance when imparted with a large camber angle. This pneumatic tire has an aspect ratio of 80% to 40% and includes a spiral belt 7, which is formed by spirally winding a ribbon-like strip 9 obtained by rubber-coating two paralleled steel cords 8 in the tire circumferential direction and in which a spacing A between the two steel cords in the ribbon-like strip along the periphery of the spiral belt 7 is 0.8 to 1.5 mm in a state where the pneumatic tire is mounted on an application rim and inflated to a prescribed internal pressure with no load being applied thereto. The spiral belt is composed of a closely spaced region M in which a spacing B between steel cords of adjacent ribbon-like strips along the periphery of the spiral belt 7 is 0.8 to 2.5 mm and loosely spaced regions S in which the spacing B is 3.5 to 6.0 mm, the closely spaced region M including a closely spaced region M1 that constitutes 10 mm or more and 50% or less of the length along the periphery of the spiral belt 7 as centered at the tire equator CL, and the steel cords each have a tensile strength of 200 N to 1,000 N.

Motorcycles tyre including a carcass structure, a zero-degree belt structure arranged in a radially outer position with respect to the carcass structure and a tread band arranged in a radially outer position with respect to the belt structure. The belt structure includes at least one hybrid reinforcing cord that has an elongation greater than 4% when subjected to a load equal to about 50 N and a tangent modulus with a monotonic progression as the elongation increases for elongations comprised between 4% and at least 9%.

A cord of a band of a tire has a single-stranded structure in which steel filaments are stranded, and the number of the filaments is not less than three and not greater than six. In a cross-section of the cord, when represents a diameter of a smallest circle that surrounds cross-sections of the filaments, and represents a diameter of each filament, a gap is formed between the filaments such that the diameter is not less than three times the diameter and not greater than six times the diameter in the case of the number of the filaments being three or four. An initial elongation of the cord is not less than 0.1% and not greater than 1.5%.

[Object] A pneumatic tire that allows reduction of the occurrence of a TGC and, at the same time, allows reduction of rolling resistance, is provided. [Solution] The tire 12 includes a band 26 disposed radially inward of a tread 14, and a belt 24 disposed radially inward of the band 26. The band 26 includes a cord that is helically wound and extends substantially in a circumferential direction. The belt 24 includes an inner layer 24a, and an outer layer 24b that is layered over the inner layer 24a and disposed radially outward of the inner layer 24a. The inner layer 24a and the outer layer 24b each include multiple cords aligned with each other. The cords in the inner layer 24a and the cords in the outer layer 24b are inclined relative to an equator plane. A direction in which the cords in the inner layer 24a are inclined relative to the equator plane is opposite to a direction in which the cords in the outer layer 24b are inclined relative to the equator plane. Absolute values of inclination angles of the cords in the inner layer 24a and the cords in the outer layer 24b relative to the equator plane are greater than or equal to 35, and not greater than 55.

The present invention provides a thin layer capply and a low-weight tire to which the thin layer capply is applied. The thin layer capply of the present invention has effects of reducing a rolling resistance of the tire through a weight reduction and improving fuel efficiency of a vehicle in which the tires are mounted while maintaining stiffness required for the tire, by forming the cord spinning layer in a thin tape form by spinning and depositing a plurality of cord strands, rather than twisting a plurality of cord strands to form the capply cord.

In a pneumatic tire including a carcass layer mounted between a pair of bead portions and a belt reinforcing layer disposed on an outer circumferential side of the carcass layer, the carcass layer is formed of a carcass cord made of an organic fiber cord, an elongation at break of the carcass cord is set to 20% or more, an elongation under a load of 1.5 cN/dtex of the carcass cord on the inner circumferential side of the belt layers is set to from 5.5% to 8.5%, the belt reinforcing layer is formed of a cover cord made of an organic fiber cord, and a tensile strength of the cover cord per width of 50 mm at a 3.0% elongation is set to from 2.8 kN to 4.0 kN.

The invention relates to a reinforcement ply for a pneumatic vehicle tire, preferably for a belt bandage ply of a pneumatic vehicle tire, where the reinforcement ply has strengthening elements comprising at least one multifilament yarn, and where the at least one multifilament yarn is composed of polyamide based mainly on renewable raw materials. For the conservation of the environment and resources, coupled with improved product quality, the multifilament yarn consists of nylon-4,10.

In a tire 2 for a two-wheeled automotive vehicle, a carcass ply 24 is extended on and between one bead 8 and the other bead 8 along inner sides of a tread 4 and sidewalls 6, and includes a main portion 24a and turn-up portions 24b, which are formed by the carcass ply 24 being turned up around the beads 8 from an inner side toward an outer side in an axial direction. An outer end Pp of each turn-up portion 24b is positioned outward of a tread end Pe in a radial direction. A band 14 is positioned between a belt 12 and the tread 4, such that the band 14 covers the belt 12. An outer end P1 of an inner layer 28 layered over a carcass 10 and the outer end Pp of the turn-up portion 24b are positioned facing each other.

Hooping layer (71) of a passenger vehicle tire has a force at break FR per mm of axial width of the hooping layer at least equal to 35 daN/mm, an elongation at break AR at least equal to 5%, and a secant extension modulus MA at least equal to 250 daN/mm, for an applied force F equal to 15% of FR. Working reinforcement (6) comprises single working layer (61) the working reinforcers of which form, with circumferential direction (YY), an angle A.sub.T at least equal to 30 and at most equal to 50. The carcass reinforcers of at least one carcass layer (81) form, with circumferential direction (YY) and in equatorial plane (XZ), angle A.sub.C2 at least equal to 55 and at most equal to 80 and having an orientation opposite to angle A.sub.T of the working reinforcers so that the carcass reinforcers and the working reinforcers constitute a triangulation.

A passenger vehicle tire having hooping layer (71) that has a force at break FR per mm of axial width of the hooping layer at least equal to 35 daN/mm and has a secant extension modulus MA at least equal to 250 daN/mm, for an applied force F equal to 15% of FR. Working reinforcement (6) comprises a single working layer (61) the working reinforcers of which form, with the circumferential direction (YY), an angle A.sub.T at least equal to 30 and at most equal to 50. The carcass reinforcers of the at least one carcass layer (81) form, with the circumferential direction (YY) and in the equatorial plane (XZ), an angle A.sub.C2 at least equal to 55 and at most equal to 80 and having an orientation opposite of that of angle A.sub.T of the working reinforcers so that the carcass reinforcers and the working reinforcers constitute a triangulation.