A pneumatic tire includes a carcass layer and belt layers including belt cords inclined with respect to a circumferential direction, the belt cords of different layers being arranged in a criss-cross manner. In at least one belt layer, an inclination angle ? of the belt cords with respect to the circumferential direction at a center position and an inclination angle ? of the belt cords with respect to the circumferential direction at a belt end position satisfy 15???<??35?. A maximum ground contact length L1 and a ground contact length L2 satisfy 0.8?L2/L1?1.0, where L1 is the maximum ground contact length in the circumferential direction, W1 is a maximum ground contact width in a radial direction, and L2 is the ground contact length in the circumferential direction at a position 40% of W1 from the center position outward in a lateral direction.

Tyre for motorcycles includes a carcass structure, a 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, wherein the belt structure is of the zero degree type and includes at least one reinforcing cord having an elongation at break smaller than about 3%; the cord includes a plurality of first metal wires twisted together so as to form a core of first metal wires and a plurality of second metal wires twisted together around said core; and the number and the diameter of the second metal wires are such that the second metal wires are not able to fully enclose the core.

The present invention relates to a novel tire cord fabric or strip made of alternating PET and nylon 6.6 warp cords which is used as tire reinforcement. Such a novel tire cord fabric or strips improve high speed durability, tread separation resistance and impact resistance when used as zero degree spirally wound cap ply in pneumatic radial tires.

Provided are a pneumatic tire with improved dimensional stability, low loss property, and durability and a method of producing the same. In a pneumatic tire, a rubber-fiber composite is used in at least any of a carcass ply and a cap ply, the rubber-fiber composite containing: a fiber cord made of polyamide multifilament fibers having a glass transition temperature in a range of 150 C. to 200 C.; and a rubber, a layer made of a resorcin-formalin-latex adhesive is formed at an interface between the fiber cord and the rubber, and a thermal contraction stress at 177 C. of the fiber cord with the layer formed thereon is 0.01 cN/dtex to 0.2 cN/dtex.

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.

A pneumatic tire comprises a tread portion provided with a band layer disposed radially inside a tread rubber provided with a first circumferential groove. Cords of the band layer are a hybrid cord formed by twisting together a first filament and a second filament having an elastic modulus lower than that of the first filament. In a region radially inside the first circumferential groove, a maximum thickness t1 of topping rubber on the radially outer side of the band cords is not more than 1.0 mm; a minimum distance d1 from the bottom of the first circumferential groove to the radially outer surface of the band layer is not more than 2.0 mm; and a distance d2 from a groove edge of the first circumferential groove to the radially outer surface of the band layer is not more than 15.0 mm.

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.

The present invention relates to a novel polyester tire cord reinforcement which has bi-elastic tensile properties. The tire cord includes at least two cord plies, and there is a spacing between the cord plies. Such a novel bi-elastic polyester tire cord improves high speed durability and significantly eliminates flatspotting when used as a cap ply in pneumatic radial tires.

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 relates to a novel tire cord fabric or strip made of alternating nylon cords having different constructions. Such a novel cord fabrics or strips improves high speed durability and tread separation resistance when used as zero degree spirally wound cap ply on the belt package in pneumatic radial tires.