An insert for a pneumatic tire including an annular member adapted to contact at least 10% of an interior surface of the pneumatic tire and provide an outward pressure thereagainst.

The present technology provides a pneumatic tire that can improve air dispersibility during vulcanizing at the interfaces of a plurality of types of rubber layers integrally formed by rolling or extruding, and that can effectively suppress blister defects. In a pneumatic tire where a plurality of types of rubber layers integrally formed by rolling or extruding, at least one strand of thread is provided at an interface of the plurality of types of rubber.

The present technology provides a pneumatic tire that can improve air dispersibility during vulcanizing at the interfaces of a plurality of types of rubber layers integrally formed by rolling or extruding, and that can effectively suppress blister defects. In a pneumatic tire where a plurality of types of rubber layers integrally formed by rolling or extruding, at least one strand of thread is provided at an interface of the plurality of types of rubber.

An inner tube for a pneumatic tire having an increased resistance to punctures. The inner tube may have at least one puncture resistant ply made from a fiber reinforcement oriented around the outer circumference of the inner tube. The inner tube may provide increased resistance to punctures in the tread portion of the tire.

An inner tube for a pneumatic tire having an increased resistance to punctures. The inner tube may have at least one puncture resistant ply made from a fiber reinforcement oriented around the outer circumference of the inner tube. The inner tube may provide increased resistance to punctures in the tread portion of the tire.

The present invention provides a pneumatic tire including a sealant layer that has excellent tear resistance despite its being formed of a generally string-shaped sealant provided continuously and spirally along an inner periphery of the tire. Included is a pneumatic tire including an innerliner and a sealant layer located radially inside the innerliner, the sealant layer including a first sealant layer and a second sealant layer stacked in that order from the innerliner, the first sealant layer including a generally string-shaped sealant provided continuously and spirally along an inner periphery of the tire, the second sealant layer including a generally string-shaped sealant provided continuously and spirally along the first sealant layer, the sealant of the first sealant layer and the sealant of the second sealant layer extending in directions crossing each other.

When (I) a tyre 1 is in contact with a flat surface (S) with a camber angle of 40 degrees, (II) a load (F) applied to the tyre is increased from zero, and (III) a curve (T) is obtained by plotting, in a XY coordinate, a displacement (x) in a tyre axial direction and a displacement (y) in a tyre radial direction of a position (A) of one of tyre tread edges (Te) closer to the flat surface (S), the displacements being from a reference position (A0) when the load (F) is zero, inclination of the curve (T) increases as the load (F) increases at least in a range where the load (F) is not more than 78% of a maximum load capacity load of the tyre.

An insert for a pneumatic tire including an annular member adapted to contact at least 10% of an interior surface of the pneumatic tire and provide an outward pressure thereagainst.

An insert for a pneumatic tire including an annular member adapted to contact at least 10% of an interior surface of the pneumatic tire and provide an outward pressure thereagainst.

A balanced non-deflatable vehicle tire providing balanced operation even after partial puncture, adjustment of overall air pressure, use of standard rimmed wheels, and the option of being retrofit into existing tires, by providing alternating layers of puncture-resistant sheet material and pressurized-cell sheets, and an inner-tube to fill the remaining internal space and to adjust and apply balanced pressure internally.