In a pneumatic tire, bead cores have a wire arrangement. In a cross-sectional view in a tire meridian direction, a tangential line and a contact point are defined. The tangential line contacts an innermost layer in a radial direction and the wire cross sections innermost and outermost in a lateral direction in the wire arrangement from a rim fitting surface side. The contact point of the tangent line is on the wire cross section on the outermost side. A gauge Wh in the lateral direction from the contact point to the rim fitting surface and an outer diameter φ of the bead wire have a relationship 2.0≤Wh/φ≤15.0. A radial height H2 of a contact portion between a body portion and a turned back portion of a carcass layer has a relationship 0.80≤H2/H1≤3.00 to a radial height H1 of the bead cores.

Provided is a tire including a tread portion. The tread portion includes two circumferential grooves and three land portions. The three land portions include a crown land portion disposed on a tire equator, and two shoulder land portions including tread contact ends. At least one of the shoulder land portions includes a plurality of main inclined grooves and a plurality of subsidiary inclined grooves. The main inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends disposed outwardly of the tread contact ends Te in the tire axial direction. The subsidiary inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends ending in the shoulder land portions.

A bead portion of a tire includes a bead core, a first bead filler arranged at a radially outer side of the bead core, a first carcass extending around the bead core and the first bead filler, a second carcass extending radially inward and adjacent the first carcass, a second bead filler disposed axially adjacent the second carcass, a first chafer disposed at an axially outer side of the second bead filler, a second chafer extended about a radially inner end of the first carcass, and a flipper extending radially inward from a position axially adjacent an axially outer side of the first bead filler. The flipper further extends axially inward adjacent a radially inner side of the bead core. The flipper further extends radially outward to position axially adjacent a first part of the first carcass, a second part of the first carcass, the second carcass, and a radially outermost end of the first bead filler.

Provided is an aircraft tire which has both satisfactory light weight and satisfactory separation durability of carcass ply ends. An aircraft tire (10) includes a pair of bead cores (1), and a carcass (2) extending between the pair of the bead cores (1). In this aircraft tire (10), the carcass (2) includes at least one layer of a turn-up ply (2a) which is composed of a main body (2aa) and folded portions (2ab), and at least one layer of a down ply (2b) which covers a tire width-direction outer side of the respective folded portions (2ab) of the turn-up ply (2a) and extends to at least a tire radial-direction inner side of the respective bead cores (1); rubber-cord reinforcing members (6) are each arranged between the main body (2aa) of an outermost turn-up ply (2a) and the folded portion (2ab) of the turn-up ply (2a) extending to a tire radial-direction outermost side, and between the folded portion (2ab) of the turn-up ply (2a) extending to the tire radial-direction outermost side and an innermost down ply (2b); and cords of the rubber-cord reinforcing members (6) have an elongation at break of not less than 30%.

A pneumatic tire comprises a carcass, a bead apex rubber, and a bead reinforcing cord layer. The bead apex rubber has a radially outer edge positioned at a radial height of 15% to 25% of the tire section height. The bead reinforcing cord layer comprises an axially inner first part disposed on the axially outside of a carcass ply main portion, and an axially outer second part disposed on the axially inside of a carcass ply turned-up portion. The radially outer edge of the axially outer second part is radially outwardly spaced apart from the radially outer edge of the carcass ply turned-up portion by at least 5 mm.

A tire having a radial carcass reinforcement, made up of a single layer of reinforcing elements anchored in each of the beads by being turned up around a bead wire, reinforced by a stiffener. The two working crown layers are the only ones present to form the crown reinforcement over at least 75% of the width of the tread, the absolute value of the difference between the absolute values of the angles 2 and 1 being greater than 7, 2 being greater than 1 in terms of absolute value, the mean angle satisfying the relationship 13+131*exp(L/100)<<28+110*exp(L/100), the reinforcing elements of the carcass reinforcement being cords which, in the test referred to as the permeability test, yield a flow rate of less than 20 cm.sup.3/min, a rubber compound being present within the cords, and, in the sidewall of the tire, the profile of the outer surface of the tire is at a constant distance from the carcass reinforcement layer between the points F and A, and meets the outer surface of the bead at the point C, forming two successive circular arcs.

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 tire includes: a pair of beads having bead cores and a bead filler extending to an outer side in a tire-radial direction of the bead core; a carcass ply extending from one of the bead core of one bead to the bead core of the other bead, and folded back around each of the bead cores; a first pad disposed at an outer side in a tire-width direction of a folding end of the carcass ply which is folded back; a second pad disposed at an outer side in the tire-width direction of the first pad; and rim strip rubber disposed at least at a part on an outer side in the tire-width direction of the second pad, in which an electronic component is provided to interpose the second pad and the rim strip rubber.

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.

A pneumatic tire has a rim strip rubber. A radial height of the rim strip rubber on the basis of an outer diameter position of a bead core is equal to or more than 70% of a radial height of a tire outer diameter position. An upper end of a side reinforcing layer is arranged closer to an outer side radially than an upper end of a bead filler. A distance from a tire maximum width position to the upper end of the side reinforcing layer is equal to or less than 5 mm. The maximum thickness Tw of the rim strip rubber between the upper end of the bead filler and the upper end of the side reinforcing layer is greater than the maximum thickness Tm of the rim strip rubber closer to the outer side radially than the upper end of the side reinforcing layer.