Provided is a pneumatic tire which prevents accumulation of static electricity during travelling, which inhibits the tire from rising in an electric resistance with the passage of time, and which is reduced in a rolling resistance of the tire and excellent in durability thereof. In the pneumatic tire described above, a conductive rubber is arranged for a ply coating rubber of one surface, and a non-conductive rubber is arranged for the ply coating rubber of the other surface; assuming that the respective thicknesses thereof are T1 and T2, a carcass ply has a ply in which T1/T2 satisfies 0.2T1/T20.9; and the conductive ply coating rubber is arranged at a tread side, and the non-conductive ply coating rubber is arranged at an inner liner side.

An electronic component covered by rubber sheets is arranged on a tire outer surface side of a carcass ply in a region between a tire-radial direction outside end of a bead filler and a tire-width direction outside end of a steel belt. The rubber sheets include a first rubber sheet arranged on a tire inner cavity side of the electronic component, and a second rubber sheet arranged on a tire outer surface side of the electronic component; and the second rubber sheet is configured from a rubber sheet which is more difficult to deform than the first rubber sheet.

Each of at least two layers of a carcass reinforcement has a breaking force per unit width higher than 2250 daN/dm. The minimum strength per unit width, measured for an elongation of less than 10%, of a second layer of carcass reinforcement is strictly greater than a value equal to 20% of the minimum strength per unit width, measured for an elongation of less than 10%, of a first layer of carcass reinforcement. The reinforcing elements of the two layers of carcass reinforcement have a thread count of less than 750 tex. The elongation of the reinforcing elements of the second layer of carcass reinforcement is greater than 4% under a force of 20 daN, and the secant elastic modulus values under tension at 10% elongation, Mt, Mj, satisfy the relationship Mt/Mj1.

A tire comprises a carcass ply extending between bead portions through a tread portion and sidewall portions, and turned up around a bead core in each of the bead portions from the inside to the outside in the tire axial direction so as to form a pair of turnup portions and a main portion therebetween. Each of the bead portions is provided with: a rubber bead apex disposed between the turnup portion and the main portion, and extending radially outwardly from the bead core in a tapered manner; a bead reinforcing rubber layer disposed axially outside the main portion; and an insulation rubber layer disposed between the main portion and the bead reinforcing rubber layer and having a hardness smaller than a hardness of the bead reinforcing rubber layer.

A tire including an annular tire frame composed of a plurality of resin materials, wherein an Asker D hardness Ho of a side portion of the tire frame, which side portion is to be located on an outer side in a vehicle width direction when the tire is mounted on a vehicle, is lower than an Asker D hardness Hi of a side portion of the tire frame, which side portion is to be located on an inner side in the vehicle width direction when the tire is mounted on the vehicle, and wherein a resin contained as a main component in a resin material constituting the side portion of the tire frame, which side portion is to be located on the inner side in the vehicle width direction when the tire is mounted on the vehicle, has a melting point of 140 C. or higher, or does not have a melting point and has a glass transition point of 40 C. or higher.

A tire including an annular tire frame composed of a plurality of kinds of resin materials, wherein an Asker D hardness Hi of a side portion of the tire frame, which side portion is to be located on an inner side in a vehicle width direction when the tire is mounted on a vehicle, is 0.84 times or more but less than 1.00 times an Asker D hardness Ho of a side portion of the tire frame, which side portion is to be located on an outer side in the vehicle width direction when the tire is mounted on the vehicle.

In a tire, a tire outer diameter OD is in a range 200 mmOD660 mm. A total tire width SW is in a range 100 mmSW400 mm. A carcass layer is formed by layering two layers of carcass plies formed by covering organic fiber cords with coating rubbers. The organic fiber cords of the two layers of the carcass plies have cord angles in a range of 80 degrees or more and 100 degrees or less with respect to a tire circumferential direction. A tensile strength Tcs per a width of 50 mm of each of the two layers of the carcass plies (13A, 13B) is in a range 17 N/mmTcs/OD120 N/mm with respect to the tire outer diameter OD.

A tire, including: a tire frame member formed of a resin material; and a reinforcing layer that includes a plurality of reinforcing cords coated with a rubber material and that is disposed on an outer side of the tire frame member in a tire radial direction; in which the tire frame member has a region formed of a resin material having a Young's modulus in a range of from 50 MPa to 2,000 MPa, and the region being included in at least a part of a reinforcing region in which the reinforcing layer is disposed on an outer side in the tire radial direction.

A tire includes a tread portion, a pair of bead cores, a carcass layer extended across the bead cores, and a belt layer disposed on an outer side of the carcass layer in a radial direction. A tire outer diameter OD (mm) is in a range 200?OD?660. A total tire width SW (mm) is in a range 100?SW?400. A tire internal volume V (m{circumflex over ()}3) is in a range 4.0?(V/OD)?10{circumflex over ()}6?60 with respect to the tire outer diameter OD (mm).

A radial aircraft tire (1), defined in three main directions, circumferential (X), axial (Y) and radial (Z), comprises a crown (2) surmounted by a tread (3), two sidewalls (4), two beads (5), each sidewall (4) connecting each bead (5) to the crown (2), a carcass reinforcement (7) that is anchored in each of the beads (5) at at least one bead wire (6) and extends in the sidewalls (4) as far as the crown (2), a crown reinforcement or belt (10) that extends in the crown (2) in the circumferential direction (X) and is situated radially between the carcass reinforcement (7) and the tread (3), said carcass reinforcement (7) having at least one ply referred to as carcass ply in the form of a rubber matrix reinforced with radially oriented reinforcing elements, referred to as radial textile reinforcers, the latter being constituted entirely or partially by textile plied yarns of nylon comprising N multifilament strands twisted together to form a helix, characterized in that: N is greater than 2; the count of each strand is greater than 180 tex; the tenacity of each strand is greater than 75 cN/tex; the elongation at break of each strand is greater than 14%; the tenacity of each plied yarn is greater than 60 cN/tex; the elongation at break of each plied yarn is greater than 18%; and the helix angle of each plied yarn is greater than 20.