Abstract: Provided is a run-flat tire having a substantially-crescent-shaped cross section, which makes it possible to achieve both durability at the time of run-flat travel and ride comfort at the time of travel at a normal inner pressure. A rigidity reducing portion that reduces a tire rigidity in the width direction extends in the circumferential direction on a surface of a tread rubber in an area located on the inner side than an end of a belt in the tire width direction and on the outer side than a road-contacting end in the tire width direction under a 75% load state.

Abstract: A tire having two beads and a carcass reinforcement with a main part wrapped within each bead around a bead wire core to form a turned-back portion. Each bead has an additional reinforcement and a filler profiled element extending the bead wire core radially outwards. This filler profiled element has, in any meridian plane, a three exterior sides including a radially inner side, axially inner side and axially outer side, with the axially inner and outer sides converging at a radially outermost point, and is formed of a stack in the radial direction of at least three polymer materials in contact along a contact surface that intersects any meridian plane along a meridian line.

Abstract: A run-flat tire is provided with a reinforcing cord layer adjoining the radial carcass at least from the belt end to the maximum width portion of the tire side portion; the cord constituting the reinforcing cord layer is nylon 66 cord, cellulose fiber cord, PET cord, PEN cord or aramid/nylon 66 hybrid cord, and has a cord angle of less than 10° with respect to the tire radius direction; and the elastic modulus of the cord pulled out from the tire at a temperature of 25° C. under the conditions of a load of 3 N is not higher than 40 cN/dtex, and the thermal shrinkage stress ? (cN/dtex) at a temperature of 177° C. and the elastic modulus E (cN/dtex) at a temperature of 177° C. under the conditions of a load of 10 N satisfy the following conditions: ?+0.025E?0.36, 40?E?8, and ??0.05.

Abstract: On a tire inner surface “is” facing a tire cavity “i” surrounded by a rim 2 and a pneumatic tire 3, the tire is provided with a noise damper 4 made of a spongy material and extending in the circumferential direction of the tire. Noise dampers 4 having the same cross sectional shape are used in a size group of tires which include a minimum volume tire that the cross sectional area S of the tire cavity on the meridian cross section has a minimum value Smin and a maximum volume tire that the cavity cross section area S has a maximum value Smax, and which have sizes such that the cavity sectional area ratio Smax/Smin falls within the range of 1.00 to 1.95.

Abstract: A pneumatic tire to be mounted on a drive wheel, of which a rotating direction is specified including a carcass, a belt layer having at least two belt plies which are embedded with belt cords. Also including a pair of folded reinforcing layers folded to wrap around both ends of the belt layer in a width direction of the tire, a belt reinforcing layer embedded with reinforcing elements extending substantially parallel to the tire equator. The reinforcing cords are embedded in either the inner portion or the outer portion of the pair of the folded reinforcing layers which is spaced away from the belt reinforcing layer farther than the other portion and are inclined forward or backward in the rotating direction of the tire.

Abstract: In a cross section in a tire width direction when a tire is mounted on a prescribed rim (7), a belt has a flat shape in the tire width direction, the height (SWh) of the position where the tire width is the maximum is more than half the cross-sectional height (SH) of the tire, and a path length (CSR1) of the carcass from an intersection (I1) to an intersection (I2), is longer than a path length (CSR2) of the carcass from the intersection (I1) to an intersection (I3).

Abstract: A pneumatic tire comprising a body, a tread, a pair of bead assemblies disposed in the lower section of the body, where said bead assemblies include a bead core and a bead filler, and a pair of sidewalls, where the bead assemblies and pair of sidewalls include vulcanizated rubber, and where at least one of said bead assemblies, or at least one of said sidewalls, or both said bead assemblies and sidewalls include short fibers.

Abstract: A pneumatic tire has a distinguishing mark is formed on a surface of a side wall portion. The pneumatic tire comprises a first protruding portion protruding along a profile of the mark and a second protruding portion protruding at a height which is lower than the first protruding portion, adjacent to an outer side of the first protruding portion.

Abstract: A tire includes two beads configured to come into contact with a mounting rim and two sidewalls extending the beads radially to the outside, the two sidewalls being joined together in a crown. A crown reinforcement extends axially between two axial ends and is surmounted by a tread. The crown includes, radially on the inside of the tread and radially on the outside of a carcass reinforcement, at least one first layer of rubber mix having a modulus of elasticity which is greater than or equal to 50 MPa, this first layer extending from the median plane of the tire axially to the outside, on both sides of the median plane, only as far as an axial distance from the median plane which is less than the axial distance of the axial end of the crown reinforcement from the median plane.

Abstract: A side wall reinforced run flat tire, wherein a second carcass layer that does not reach a bead core is disposed along the outer peripheral surface of a carcass layer. A position of an outer peripheral edge of a bead filler, a relationship between a rubber thickness Gc of the inner side and a rubber thickness Ga of an outer side taken on the line X normal to the rim line and centered on the carcass layer, a relationship between the rubber thicknesses Ga and Gb of the side wall rubber in an upper region of a bead portion, and a position of a folded up end of the carcass layer are each stipulated.

Abstract: A tire (34) includes a tread (38), a pair of sidewalls (42), a pair of beads (44), a carcass (46) laid between both of the beads (44) along an inside of the tread (38) and the sidewalls (42), and a pair of wings (40) positioned on an outside in an axial direction of the sidewalls (42) respectively. Each of the sidewalls (42) includes an inner layer (72) positioned on an outside of the carcass (46) in the axial direction and extended in a radial direction along the carcass (46) and an outer layer (74) positioned on a further outside of the inner layer (72) and extended in the radial direction along the inner layer (72). An inner end (82) of the outer layer (74) is positioned on an inside of an inner end (58) of each of the wings (40) in the radial direction. The inner layer (72) has a higher hardness than a hardness of the outer layer (74).

Abstract: A pneumatic tire has a carcass structure extending through a pair of opposing bead portions and an inner liner located inward of the carcass structure, each bead portion comprising a bead core about which is wrapped the carcass structure and a toeguard. Each bead portion has a bead toe, a bead base, and a bead heel, the bead base extending between the bead toe and the bead heel. The bead heel has a profile corresponding to a sector of an ellipse or approximates a sector of an ellipse by having a dual radius structure. The bead base may have a dual taper configuration. The bead core may be substantially centered in the bead portion, as determined by the material thickness at three locations about the bead core.

Abstract: Provided is a low noise pneumatic tire in which the noise absorbing member on the inner peripheral surface of the tire is made less likely to be damaged when the pneumatic tire is removed from the rim. The pneumatic tire includes a noise absorbing member of a porous material which is attached to an inner peripheral surface of the tire. In the pneumatic tire, a lubricant is applied to the inner peripheral surface of the noise absorbing member. Alternatively, both end portions, in a tire width direction, of the inner peripheral surface of the noise absorbing member are covered with protective layers harder than the noise absorbing member.

Abstract: The invention relates to a tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of reinforcement elements, which are crossed from one layer to the other, forming with the circumferential direction angles of between 10° and 45°, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and the crown reinforcement comprising between two working crown plies at least one additional ply of reinforcement elements. According to the invention, the axial ends of the reinforcement element working ply radially closest to the carcass reinforcement are turned up to cover the axial ends of a working crown ply radially external to the additional ply.

Abstract: To provide a pneumatic tire having a tire side portion with an enhanced durability according to the present invention, a run flat tire (1) has a turbulent generating concavo-convex part (5) composed of grooves and ribs and extending along at least part of a tire side portion, and a pattern is set to the turbulent generating concavo-convex part (5), in which for the turbulent generating concavo-convex part (5), letting h be a height, p be a pitch, and w be a width, a relationship is met such that 1.0?p/h?50.0, and 1.0?(p?w)/w?100.0.

Abstract: A reinforcing rubber layer having a falcated cross-section disposed on an inner side in a tire width direction of the carcass layer in a side wall portion. An angle ?, with respect to the total tire width SW and a tire cross-section height SH, satisfies a relationship (SH/SW×6+3)°???(SH/SW×6+8)°. Additionally, a height H1 of a bead filler is from 15 to 35% of the tire cross-section height SH and a height H2 of a maximum thickness position of the reinforcing rubber layer is from 35 to 55% of the tire cross-section height SH.

Abstract: A pneumatic tire has an annular bead core, a bead filler, a carcass ply rolled up in such a manner as to pinch the bead core and the bead filler, and a white rubber arranged in an outer side of the carcass ply of the side wall portion. The white rubber has an inner peripheral end positioned in an outer side of the bead filler. The bead filler has a main body rubber portion running into the bead core from a leading end, and a soft rubber portion constructing a part of an outer surface of the bead filler and positioned in an inner side of the inner peripheral end of the white rubber. The soft rubber portion is harder than the white rubber and softer than the main body rubber portion.

Abstract: The pneumatic tire includes: an air permeation preventive layer disposed in the inner surface of the tire; a belt layer buried in a tread part; and a cord layer formed by arranging a plurality of cords. The cord layer is disposed between the air permeation preventive layer and the belt layer, and extends to a bead part side further from a tire maximum width position. In addition, at least a part of the cord layer is located close to the outer surface of the tire, at a position closer to the bead part side than the tire maximum width position, so that the distance between the cords and the outer surface of the tire is not more than 1 mm.

Abstract: Provided are a pneumatic tire and a manufacturing method of the same capable of improving a separation failure at end portions of an inner liner layer made of either a thermoplastic resin or a thermoplastic elastomer composition. The pneumatic tire includes an inner liner layer made of either a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin component and an elastomer component. The inner liner layer is provided on an inner side of the tire so as to face a tire cavity. A recessed portion is formed in an internal surface area of the tire where an end portion of the inner liner layer is located.

Abstract: Accumulation of static electricity is prevented while enhancing rolling resistance performance of tire. Tread rubber 2G has tread rubber body 15 forming tread ground contact surface 2S, under tread 16 disposed radially inward of the tread rubber body, and terminal portion 17 penetrating the tread rubber body in the radial direction, the under tread 16 being in contact with cushion rubbers 13 each having cushion main portion 13A interposed between edge portion 7E of tread-reinforcing layer 7 and carcass 6 over an overlap width W1 of 1 mm or more. Tread rubber body 15, topping rubber 7G of tread-reinforcing layer 7 and sidewall rubbers 3G are made of an insulating rubber material 20 having a volume resistivity of at least 1×108 ?·cm, and under tread 16, terminal portion 17, cushion rubber 13, topping rubber 6G of carcass 6 and chafer rubber 11 are made of a conductive rubber material having a volume resistivity of less than 1×108 ?·cm.