Abstract: A pneumatic tire is described as having one or more electrical conductive strips for discharging electrical build up in the tire. The electrical conductive strips provide a static electricity conductive path from the tire rim to a ground-contacting surface. The strips are arranged around the outer surface of the tire from a first bead portion to a second bead portion. The strips can lay over the outer surface of the sidewalls and the tire tread. As positioned over the tire tread, a portion of the electrical conductive strip remains in contact with the ground as the tread wears during use to provide continued dissipation of static electricity away from the tire.

Abstract: A pneumatic tire is provided. In a meridian cross-section, an external contour shape of the bead core is a polygon formed by common tangent lines of a plurality of circumferential portions of a bead wire, the external contour shape includes a single vertex located toward the outside in a tire radial direction, an internal angle formed by two sides sandwiching the vertex is an acute angle, a bottom side of the external contour shape is inclined with respect to the tire lateral direction by from 2° to 9°, and the carcass layer is bent and folded back along a circumference of the bead core in a bead portion, a folded back portion of the carcass layer from a position of an outer end of the bead core in the tire radial direction extends toward a sidewall portion in contact with a body portion.

Abstract: A pneumatic tire is provided where a profile line in a tire meridian cross section of a center land portion defined by circumferential grooves and located on a tire equator is curved projecting outward in a tire radial direction. A carcass layer and a reinforcing layer include a recess portion curved projecting inward in the tire radial direction in a bottom region of the center land portion.

Abstract: A pneumatic tire has a turned-up carcass ply and a non-turnup carcass ply. The turned-up carcass ply is turned up around bead cores in respective bead portions from the inside to outside of the tire so as to form a pair of turned up portions extending radially outwardly on the axially outsides of the respective bead cores, and a main portion extending between the turned up portions. The non-turnup carcass ply extends between the bead portions and terminates to have edges positioned on the axially outsides of the respective turned up portions. The bead portions are each provided on its outer surface with vent lines protruding therefrom and extending continuously in the tire circumferential direction. The vent lines include a radially outer vent line formed radially outside the edges of the non-turnup carcass ply, and a radially inner vent line formed radially inside the edges of the non-turnup carcass ply.

Abstract: A run-flat tire includes a side reinforcing rubber layer, a first bead filler on an inner side of a carcass turned-up portion in a width direction, and a second bead filler on an outer side of the carcass turned-up portion in the width direction. A first bead filler height is 30% or less of a tire cross-sectional height SH. A second bead filler height is 50% or greater of the height SH. A cross-sectional area of the second bead filler is from 150% to 400% of a cross-sectional area of the first bead filler. A relationship (0.16×SH×LI?1100)?SALL?(0.16×SH×LI?800) is satisfied, where SALL represents a sum of cross-sectional areas of the side reinforcing rubber layer and the first and second bead fillers, and LI represents a load index.

Abstract: A tire includes: a bead core; a bead filler which extends to an outer side in the tire-radial direction of the bead core; a carcass ply which extends from the bead core to another bead core, and folded back around the bead core; a first rubber sheet which covers a folding end of the carcass ply folded back from an inner side in the tire-width direction; and a second rubber sheet which covers the folding end of the carcass ply folded back from an outer side in the tire-width direction, in which an electronic component is provided between the first rubber sheet and the second rubber sheet.

Abstract: A pneumatic tire includes lug grooves arranged in a circumferential direction in a tread surface of a land portion defined by two main grooves adjacent in a lateral direction, the lug grooves each crossing the circumferential direction and communicating at both ends with the main grooves, defining the land portion in the circumferential direction. A notch portion is formed on an opening edge of the lug grooves. The notch portion is cutout from the tread surface inward in a radial direction. The lug grooves have a maximum groove width at a position from 30% to 70% of a lateral direction dimension of the land portion from one of the main grooves and a groove width that decreases from the maximum groove width to the main grooves. The notch portion has a notch width that increases from a position of the maximum groove width of the lug grooves to the main grooves.

Abstract: A heavy duty tire includes a recess portion that is formed in a buttress portion, that opens toward a tire outside, and that includes a bottom portion, and a first air entry/exit promotion portion configured to promote entry and exit of air with respect to the bottom portion, and that includes a slope running from the bottom portion toward a tire surface such that a depth of the slope from the tire surface gradually decreases. A width dimension of the first air entry/exit promotion portion on a recess portion side is set smaller than a width dimension of the air entry/exit promotion portion on the opposite side to the recess portion.

Abstract: A tire including a bead core; bead filler; upper ply; reinforcement ply which is provided to overlap a tire-radial direction inside portion of the upper ply; and down ply which overlaps a turnup part of the upper ply and reinforcement ply, and extends from an outer side in the tire-radial direction to an inner side in the tire-radial direction so as to encompass the bead core and bead filler together with the upper ply, in which an electronic component is embedded in a region of substantially triangular shape in a cross section surrounded by the turnup part of the upper ply, down ply and an end part of the reinforcement ply.

Abstract: A run-flat tire includes reinforcing rubber in a sidewall, first bead filler rubber disposed toward the inside of a folded back portion of a carcass layer in a lateral direction, and second bead filler rubber disposed toward the outside of the folded back portion in the lateral direction. The reinforcing rubber has a thickness from a rim base line to a position within 38% to 68% of a tire cross-sectional height being from 90% to 100% of a maximum thickness of the reinforcing rubber. In a range from a position of a rim check line to a position being 38% of the tire cross-sectional height from the rim base line, a total thickness of the reinforcing rubber, the first bead filler rubber, and the second bead filler rubber is from 100% to 140% of the maximum thickness of the reinforcing rubber.

Abstract: A protrusion portion (110) of a pneumatic tire is formed by a plurality of protrusion parts (111) extended along a tire circumferential direction. The protrusion parts (111) are arranged with predetermined gaps therebetween so as to form a circle along the tire circumferential direction. A length (S1) of the protrusion part (111) in the tire circumferential direction is larger than a maximum width (W1) of the protrusion part (111) in a tire radial direction. In a tire side view, a narrow groove (200) extended along the tire circumferential direction is formed on a surface (111s) of the protrusion part (111).

Abstract: A tread pattern of a heavy duty pneumatic tire includes: a linear shaped center lug groove; a pair of circumferential main grooves formed in a wave shape in a tire circumferential direction; a center block; and a central narrow groove that does not have a linear shape, having an opening end that opens in the adjacent center lug grooves in a tire lateral direction position excluding on a tire equator line, and having a groove width that is narrower than the groove width of the shoulder lug groove. The groove width of the center lug groove and the circumferential main groove is narrower than the groove width of the shoulder lug groove. The central narrow groove has a portion that extends outwards in a tire lateral direction from the opening end in the half tread region where the opening end is positioned.

Abstract: Tire tread with main lugs extending from a tread edge to the equatorial mid-plane on each side of which are a plurality of secondary lugs (4) extending over 40% to 60% of the tread half-width, each secondary lug (4) having a width 20% to 40% of the shortest distance between two main lugs (3). Each main lug (3) comprises, on its trailing lateral face (32), a widened portion (320) of width D1 extending over an axial distance from a tread edge and being joined to the main lug by end face (321) inclined at an angle B1 between 18 degrees and 25 degrees to the circumferential direction. Each secondary lug (4) has end face (43) inclined at an angle S1 with the same orientation as angle B1 with respect to the circumferential direction, angle S1 being between 18 degrees and 25 degrees.

Abstract: A pneumatic tire with a reinforcement material includes: a tread that comes in contact with a road surface; side walls that extend and form shoulders and inner liners at both sides of the tread; a carcass that is integrally attached to the tread and the inner sides of the side walls and forms a turn-up head at both ends of the side walls; a belt layer that is layered on the tread of the carcass; and a bead that includes a bead core inserted in a wheel inside the turn-up head, a bead filler inserted in a side of the tread of the bead core, and a reinforcement material inserted in an interface of the turn-up head.

Abstract: 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.

Abstract: Provided is a pneumatic radial tire for an aircraft including a bead core, a radial carcass and a stiffener, the radial carcass including one or more turn-up plies and one or more down plies, wherein in tire axial direction cross-sectional view, when an intersection point of a virtual circle with a ply closest to a tire axial direction inner side of the stiffener among the plies intersecting with the virtual circle having a radius that is twice as large as a diameter D of the bead core from a center O of the bead core is a point A, an intersection point of the virtual circle with a ply closest to a tire axial direction outer side of the stiffener is a point B, and a midpoint between the point A and the point B is a reference point C, then a line segment OC connecting the center O of the bead core to the reference point C has an inclination angle ? of 17° or less to a tire radial direction line passing the center O of the bead core on the tire axial direction outer side.

Abstract: A pneumatic tire includes a tread portion including grooves formed into a predetermined pattern design, a sidewall portion including a surface on which a maximum tire width position is located, and a serration portion including a plurality of ridges arranged at intervals in a tire circumferential direction on the surface of the sidewall portion. The serration portion includes first ridge groups and second ridge groups. The first ridge groups each include a plurality of first ridges arranged adjacent to each other in the tire circumferential direction and including end portions of which the distances from the rotation axis gradually change. The second ridge groups each include a plurality of second ridges arranged adjacent to each other in the tire circumferential direction and including end portions of which the distances from the rotation axis gradually change.

Abstract: A pneumatic tyre includes a carcass extending between bead cores disposed in respective bead portions through a tread portion and sidewall portions, and bead apex rubbers each extending radially outwardly from the respective bead cores, each bead apex rubber having an inner side surface in a tyre axial direction. In a tyre cross-section under a standard inflated state, a ratio h1/H of a carcass-maximum-width height h1 to a carcass-maximum height H is equal to or less than 50%, and in at least one bead portion, an angle of a tangent line touching the inner surface of the bead apex rubber at an intersection of a tyre radial reference line passing a rim-width location of the standard wheel with the inner side surface of the bead apex rubber is in a range of from 55 to 75 degrees to the tyre radial reference line.

Abstract: A pneumatic tire includes at least four circumferential main grooves extending in a tire circumferential direction and at least five land portions defined by the at least four circumferential main grooves. A center land portion includes a plurality of center lug grooves extending through the center land portion in a tire lateral direction and disposed at predetermined intervals in the tire circumferential direction, and a plurality of center blocks that are defined by the plurality of center lug grooves. The center blocks each include a narrow shallow groove that extends through the center block in the tire lateral direction and that remains open when the tire comes into contact with the ground.

Abstract: This disclosure aims to provide a tire having excellent braking performance on dry road surface and on wet road surface, and having excellent steering stability. This disclosure is a tire comprising a tread 10, wherein: the tread 10 has a plurality of circumferential grooves extending continuously in a tire circumferential direction C, the circumferential grooves including circumferential main grooves 21a, 21b, 22 with a cross-sectional area in a tire width direction W of 10 mm2 or more, and a groove width Lb at a 95% groove depth position with a groove depth of a groove bottom as 100% of at least the circumferential groove 21a located on an outermost side when mounted to a vehicle among the circumferential main grooves 21a, 21b, 22 being 25% to 60% with respect to a groove width Lt on a tread surface.