The bead portion (60) of the pneumatic tire (10) includes a bead structure (61) having a bead core (62) in which a bead cord (62a) formed of a metal material is covered with a resin material, and a film-like member (64) covering the periphery of the bead structure (61). The film-like member (64) is formed of a material having a lower moisture permeability than the resin material.

A pneumatic radial tire having a bead portion provided therein with a bead core, wherein the bead core is wrapped with a flipper, wherein the flipper is formed of a reinforced material, wherein the flipper has an axially inner leg that extends radially outward to a radial distance Li from the reference line XX′, wherein the line XX′ extends through the geometric center of the bead core, wherein the radial distance Li is equal to or greater than the bead radius, as measured in a radial direction from line XX′.

A pneumatic radial tire having a bead portion provided therein with a bead core, and a first layer of a plurality of sheath wires surrounding the bead core, and a second layer formed of a plurality of sheath wires surrounding the first layer, wherein the second layer of shear wires has a diameter less than the sheath wires of the first layer.

With a pneumatic tire not mounted on a rim, in a meridian cross-section a first line is parallel with an innermost bottom side of a bead core in a radial direction and passes through an outermost projection of the bead core in a lateral direction, a second line is orthogonal with the first line at the outermost projection, a third line is orthogonal with the first line and passes through an intersection of a rim cushion rubber, a distance between the second and third lines is 2.0 to 4.0 mm, a shortest distance between an innermost projection of the bead core in the lateral direction and a cord of a carcass layer is 0.6 to 1.4 mm, and a shortest distance between an innermost end of the bottom side of the bead core in the lateral direction and the cord of the carcass layer is 1.2 to 2.2 mm.

The invention is based on a tire component (1) for a green tire (6), a rubber region (2) of the tire component (1) being made of rubber, at least one transmitting and receiving device (3) being arranged in the rubber region (2), the at least one transmitting and receiving device (3) being an electromagnetically acting transmitting and receiving device (3) and the at least one transmitting and receiving device (3) having at least one antenna (4), wherein the at least one antenna (4) is arranged on a carrier device (5).

In a cross-section of a pneumatic tire, a contour of the bead core is a polygon formed by tangent lines of circumferential portions of a bead wire, the contour includes a vertex with an acute angle and a bottom side opposite the vertex, the carcass layer is folded back along a circumference of the bead core in a bead portion, a folded back portion of the carcass layer from an outer end of the bead core extends in the radial direction, and a distance in the radial direction between a center of an arc profile of a tire outer surface and a straight line extending in the lateral direction through the vertex is within 20% of a radius r of the arc, and a distance in the lateral direction between the center of the arc and a straight line extending in the radial direction through the vertex is within 2r±0.4r.

The invention is based on a tire component (1) for a green tire (6), a rubber region (2) of the tire component (1) being made of rubber, at least one transmitting and receiving device (3) being arranged in the rubber region (2), the at least one transmitting and receiving device (3) being an electromagnetically acting transmitting and receiving device (3) and the at least one transmitting and receiving device (3) having at least one antenna (4), wherein the at least one antenna (4) is arranged on a carrier device (5).

Provided is a heavy-duty pneumatic tire in which not only occurrence of a damage of CBU but also occurrence of pulling-out of a carcass ply can be inhibited, and which has excellent durability. In the tire, beads each include a cover enclosing at least a part of a core. The cover is located, between the core and the carcass ply, in a portion at which the carcass ply encloses the core. The cover is composed of one cover ply including a large number of aligned cover cords and a cover topping rubber covering the cover cords. A ratio of a distance between the cover cords to an outer diameter of a carcass cord is not lower than 0.35 and not higher than 0.85. A difference between a hardness of the cover topping rubber and a hardness of a carcass topping rubber is not less than 5 and not greater than 5.

A heavy truck tire is provided that includes a tread and a casing. The casing has a bead with a bead core having padding gum and a rod with a perimeter. A contention armature surrounds the bead core and has an overlap, a majority of which is located outward in the radial direction from the rod. The padding gum is arranged in relation to the rod such that an outer area, inner area, and an axially outer area of the padding gum have areas that are greater than or equal to 20% of the area of the perimeter of the rod. An axially inner area of the padding gum is greater than or equal to 10% of the area of the perimeter of the rod.

A foldable tire includes a tire main body provided at two edges thereof with two tire beads respectively. A plurality of rings are disposed in each of the tire beads. Each of the rings has a reinforcing core, which includes a plurality of flexible steel filaments helically entwined with each other and has a diameter ranging from 0.2 millimeters to 0.5 millimeters, and a cladding layer clothing the reinforcing core, so that the reinforcing cores located in each of the tire beads are separated from each other.