Abstract: At least one mark formed by a character or a figure and a surface geometry arrangement region disposed adjacent to the mark outside the mark can be formed on a surface of a sidewall portion of a tire. The surface geometry arrangement region can have a plurality of micro projections. The surface geometry arrangement region can include a first region formed in at least a part of the surface geometry arrangement region such that the greater a distance from the mark is, the less a height of the micro projection can be.

Abstract: Provided is a pneumatic tire having both improved run-flat durability and excellent wet grip properties; the pneumatic tire including a rubber composition used in a tread part, and a rubber support layer having a gauge thickness in a specified range; the rubber composition including specified compounded amounts of natural rubber, a terminal-modified styrene-butadiene rubber, silica, and a thermoplastic resin, wherein the rubber composition is largely strain-dependent for the storage elastic modulus.

Abstract: The present invention provides a tire having improved bead endurance in which cords of a steel chafer are waved and the advancing direction of the waves of the steel chafer is perpendicular to the advancing direction of carcass cords, thereby minimizing cracks at an edge of the carcass. The tire having a chafer structure for enhancing bead endurance includes: a carcass having carcass cords; and a steel chafer covering the carcass and having a plurality of waved chafer cords.

Abstract: A pneumatic tire comprising: first carcass ply that is comprised of; a tire-inner-face part extending along inner face of the tire to span between the tire bead portions; and turned-up parts extended as turned up from outer faces of the tire bead portions up to inside beyond fringes of a belt layer; and second carcass ply that is substantially omitted at between the tire bead portions and extends as being turned up from outer faces of the tire bead portions up to inside beyond fringes of a belt layer; and cords forming the tire-inner-face part, the turned-up part and the second carcass ply having inclination to radial direction of the tire; and direction of the inclination of the cords being alternated in respect of leftward or rightward, between two adjacent ones of the tire-inner-face part, the turned-up part and the second carcass ply.

Abstract: This invention pertains to a tire comprising at least one carcass ply and at least one breaker ply, the carcass and breaker plies each comprising continuous filaments having a tenacity of at least 15 grams force per dtex and a modulus of at least 400 grams force per dtex wherein the carcass ply turn-ups terminate under the at least one breaker ply. The invention further pertains to a tire comprising a plurality of apex components and carcass ply turn-ups that terminate within the apex region of the tire. The invention also discloses a tire wherein the carcass ply turn-ups terminate in the upper sidewall region of the tire and ply spacers are located between ply-turn-ups.

Abstract: A pneumatic tire including: a cylindrical annular structure; a rubber layer, which will become a tread portion, provided along a circumferential direction of the annular structure on an outer side of the annular structure; a carcass portion provided on at least both sides in a width direction of the cylindrical structure including the annular structure and the rubber layer; and an extending portion that extends from both sides in the width direction of the annular structure farther outward in the width direction than a ground contact edge on the outer side in the width direction of the tread portion, and that is provided in plurality on both sides in the width direction along the circumferential direction of the annular structure.

Abstract: Tire (10) for a heavy goods vehicle comprising a radial carcass reinforcement (60) anchored in each of the beads (50) to an anchoring structure (700), comprising a circumferential reinforcement (70), the carcass reinforcement (60) being partially wrapped around the anchoring structure (700), the tire (10) also comprising a coupling reinforcement (150) comprising a first part (151) in contact with the carcass reinforcement (60) and being extended by a second part (152) in contact with the anchoring structure (700) as far as a point (157) radially on the outside of the anchoring structure (700), located axially between the axially inner-most point (702) and the axially outermost point (704) of the anchoring structure (700), the tire (10) also comprising a stiffening reinforcement (160) surrounding the coupling reinforcement (150) and running radially on the inside of the anchoring structure (700) and of the coupling reinforcement (150), in which the axially outside end point (166) of said stiffening reinforceme

Abstract: Provided is a run-flat tire in which a side-reinforcing rubber is arranged on the inside of the carcass in the tire width direction on both sidewall portions. The carcass plies include cords made of a material having a heat shrinkage rate of 2% to 8% at 177° C., and the run-flat tire further includes a reinforcing cord layer which includes cords made of a material having a heat shrinkage rate of less than 2% at 177° C., the reinforcing cord layer being arranged on the outside of the side-reinforcing rubber in the tire width direction on both sidewall portions.

Abstract: There is provided a pneumatic tire having excellent uneven wear resistance performance, low rolling resistance and durability of side portion's appearance. The pneumatic tire comprises a carcass as a framework consisting of at least one carcass ply troidally extending between bead portions embedded with a pair of bead cores and turned around the bead cores from an inner side to an outer side in a tire width direction, a belt comprising at least one inclined belt layer and a tread successively disposed on a radially outer side of a crown portion of the carcass, wherein a ratio BD/BW is in a range between 0.01 and 0.

Abstract: A pneumatic tire capable of reducing rolling resistance and discharging static electricity generated during running, wherein each of a tread rubber, a breaker rubber, and a sidewall rubber formed on the tread part, the breaker part, and the sidewall part, respectively, has a volume specific resistivity of 1×108 ?·cm or more, the pneumatic tire further including a conduction rubber embedded in the tread part so as to be at least partially exposed to a surface of the tread part, bead part rubber disposed at a region contacting a rim flange of the bead part, and electroconductive rubber electrically connecting the conduction rubber to the beat part rubber, wherein each of the conduction rubber, the bead part rubber, and the electroconductive rubber has a volume specific resistivity of less than 108 ?·cm.

Abstract: Tire (10) for a heavy goods vehicle comprising a radial carcass reinforcement (60) anchored in each of the beads (50) to an anchoring structure (700), comprising a circumferential reinforcement (70), the carcass reinforcement (60) being partially wrapped around the anchoring structure (700), the tire (10) also comprising a coupling reinforcement (150) comprising a first part (151) in contact with the carcass reinforcement (60) and being extended by a second part (152) in contact with the anchoring structure (700) as far as a point (157) radially on the outside of the anchoring structure (700), located axially between the axially innermost point (702) and the axially outermost point (704) of the anchoring structure (700), the tire (10) also comprising a stiffening reinforcement (160) surrounding the coupling reinforcement (150) and running radially on the inside of the anchoring structure (700) and of the coupling reinforcement (150), wherein the axially outside end point (166) of said stiffening reinforcement

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: A run-flat tire (11) comprising a crown comprising a crown reinforcement (21, 22) surmounted by a tread (30); two sidewalls (40) extending the crown radially inward; two beads (50) radially inward to the sidewalls and each comprising an annular reinforcing structure (60); at least one carcass reinforcement (71, 72) anchored in each of the beads and extending from the beads through the sidewalls toward the crown; and at least one sidewall insert (80) axially on the inside of the carcass reinforcement, comprising at least one polymer compound; wherein at least one sidewall of the tire further comprises: at least one additional sidewall reinforcement (90) comprising reinforcing elements, positioned axially on the outside of the carcass reinforcement, the radially inside end (91) of the additional sidewall reinforcement being, in any radial section, radially on the inside of the axial straight line (100) that passes through those points in the sidewalls at which the carcass reinforcement has its greatest axial wi

Abstract: A pneumatic radial tire has a carcass ply which extends between bead cores arranged in a pair of bead portions. The carcass ply is wound up to an outer side in a tire radial direction around the bead cores. A chafer is arranged in such a manner as to wrap around the carcass ply from an inner side to an outer side in a tire width direction, around the bead core. An inner end of the chafer positioned in the inner side in the tire width direction is arranged in the outer side in the tire radial direction than a winding end of the carcass ply. A reinforcing rubber tapering off toward the outer side in the tire radial direction is provided adjacently to the outer side in the tire radial direction of the inner end of the chafer.

Abstract: The invention relates to a tire comprising at least one, and preferably at least two, reinforcing structures of the carcass type, one inner one and one outer one, possibly one or more crown reinforcing structures, at least one circumferential bielastic reinforcing element consisting of a bielastic fabric in which the said fabric used is a bielastic knit, namely a loop mesh fabric the mesh-forming loops of which are able to move relative to one another in the direction of knitting and in the direction perpendicular to the direction of knitting, the said bielastic reinforcement being positioned in such a way as to run substantially parallel along a portion of a reinforcing structure.

Abstract: A pneumatic tire having pairs of shoulder section and bead section shear layers positioned on at least one axial side of the carcass layer. Examples include one or more of the shear layers constituted of an elastomeric fabric having elastomeric fibers woven in the fabric. Such fibers may be spandex fibers and the fabric may further be characterized as being woven additionally with nylon fibers in a tricot construction. Other embodiments include at least one of the shear layers constituted of a polyurethane type elastomer material having an MA1O of between 1 MPa and 350 MPa. Exemplary shoulder section and bead section shear layers in a pinch shocked region are opposite across an interior of the tire.

Abstract: A pneumatic tire having an impact resistant construction is provided. More specifically, a tire is provided that has increased resistance to travel conditions that can cause pinch shock. Reinforcements of a particular orientation are provided in portions of the tire where pinch shock typically occurs. A range of orientations for the cords used in such reinforcements is described.

Abstract: Tire (10) comprising a radial carcass reinforcement (2) anchored in beads, the tire (10) comprising two sidewalls (1), each sidewall (1) extending between a bead (4) and a crown (3), the two sidewalls comprising a first additional reinforcement (6) positioned either between the carcass reinforcement and the internal cavity of the tire or axially on the outside of the carcass reinforcement and at least one of the sidewalls comprising a second additional reinforcement (5), this tire being characterized in that the first additional reinforcement comprises a plurality of reinforcing elements of textile nature oriented at an angle at least equal to 80° and at most equal to 90° to the circumferential direction, and in that the second additional reinforcement (5) comprises, in the circumferential direction and in an alternating manner, a plurality of first parts (51) and of second parts (52), these second parts (52), having a mean width at least equal to 20 mm, these first and second parts having ultimate tensile st

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 run-flat tire (12) comprising: a crown; two sidewalls (40); two beads (50) each one comprising at least one annular reinforcing structure (60); a carcass reinforcement (71, 72) anchored in each of the beads by wrapping it around the annular reinforcing structure so as to form an incoming portion (711) extending from the crown through the sidewalls towards the bead and a wrapped-around portion (712); and at least one sidewall insert (80); at least one sidewall of the tire further comprising at least one additional sidewall reinforcement (90) positioned axially on the inside of the carcass reinforcement and extending radially at least between a radial height H1 of 30 mm, H1 being measured from the radially innermost point of the annular reinforcing structure; and a radial height H2 equal to 30% of the height H of the tire; and a layer (110) of polymeric composition positioned between the additional sidewall reinforcement and the carcass reinforcement.

Abstract: The invention relates to a tire having a radial carcass reinforcement, consisting of at least one layer of reinforcing elements anchored in each of the beads by an upturn around a bead wire, said carcass reinforcement upturn being reinforced by at least one layer of reinforcing elements or stiffener. According to the invention, the reinforcing elements of at least one stiffener are non-wrapped metal cords with saturated layers, having, in what is called the permeability test, a flow rate of less than 5 cm3/min and the thickness of the polymer blends separating the stiffener from the end of the carcass reinforcement upturn is strictly less than 3.5 mm.

Abstract: A tire includes a rim protector (20) positioned on an outside in an axial direction of a sidewall. The rim protector (20) includes a main portion (34), an outer portion (36) and an inner portion (38). The main portion (34) has a large number of blocks (44). The blocks (44) are arranged in a circumferential direction. The main portion (34) further has a first slit (46), a second slit (48) and a large number of third slits (50). The first slit (46) is extended in the circumferential direction. The second slit (48) is extended in the circumferential direction. Each of the third slits (50) is extended in a radial direction. The third slit (50) reaches the second slit (48) from the first slit (46). Each of the blocks (44) is surrounded by the first slit (46), the second slit (48) and two of the third slits (50).

Abstract: A vehicle of motorcycle type comprising at least two axle systems each equipped with a mounted assembly consisting of a wheel and a tire. Each of the tires comprises, in each sidewall, at least one additional layer of reinforcing elements forming with the circumferential direction an angle of between 20° and 60°, the orientation of the reinforcing elements of the additional layer in a sidewall being symmetrical to the orientation of the reinforcing elements of the additional layer in the other sidewall in relation to the equatorial plane, the angle formed by the plane comprising a reinforcing element of an additional layer with a radial plane comprising the radially inner end of said reinforcing element being oriented in the direction of rotation of the mounted assembly corresponding to the forward movement of the vehicle in the rear tire and in the opposite direction in the front tire.

Abstract: Provided are a rubber composition for sidewalls containing 100 parts by mass of a rubber component consisting of at least a natural rubber or a modified natural rubber, 5 parts by mass or less of carbon black, 10 to 40 parts by mass of silica and 5 to 30 parts by mass of an inorganic filler component composed of one kind or two or more kinds of inorganic filler excluding carbon black and silica, and a pneumatic tire provided with a sidewall rubber prepared using the rubber composition. The used amounts of raw materials derived from petroleum resources have been reduced in this rubber composition. Moreover, the rubber composition exhibits low fuel consumption due to low rolling resistance and good flex crack growth resistance.

Abstract: A pneumatic radial tire has a chipper in place of a traditional apex, the chipper located between a carcass main portion and turnup portion. The chipper layer may be composed of a chopped carbon fiber and aramid composite reinforced elastomeric layer. The tire sidewalls have a radial height SH and a section width SW located within a range of 0.4 to 0.44 of the sidewall radial height SH measured from the bead core. The section width SW may further be located within a range of 0.1? to 0.3? inches from a radially outward end of the chipper layer in a radial direction. The tread may of a dual layer construction, having a radially inward first layer formed of a relatively low rolling resistance compound and a radially outward second layer formed of a compound containing silica.

Abstract: A pneumatic radial tire having a circumferentially extending equatorial plane of the tire, the tire comprising a carcass, a tread radially outward of the carcass, the carcass comprising at least one carcass reinforcing ply, opposing bead portions, and opposing sidewalls, the carcass reinforcing ply having a main portion extending between the opposing bead portions and a pair of turnup portions, each turnup portion extending from one end of the main portion, each bead portion having a bead core, and a reinforcement cavity outward of each bead core, the cavity located between the main portion and one turnup portion of the at least one reinforcing ply, the tire characterized by: the tread comprising a radially outer tread cap and a radially inner tread base radially underneath the tread cap, the tread base comprising a rubber composition comprising from 15 to 45 phr of styrene-butadiene rubber; from 20 to 50 phr of polybutadiene; and from 10 to 35 phr of natural or synthetic polyisoprene, and from 35 to 65 ph

Abstract: A heavy duty pneumatic tire comprises a carcass ply of steel cords turned up around a bead core in each bead portion so as to form a pair of turned up portions and a main portion therebetween. The steel cords of the carcass ply are rubberized with a topping rubber having a hardness Ht1 of from 68 to 90 degrees. The bead core is composed of: a bead core main made of windings of a steel wire; a rubber coating penetrating into the bead core main and having a hardness Hb of from 78 to 90 degrees; and a bead core wrapping layer surrounding the bead core main and composed of at least one ply of parallel organic fiber cords rubberized with a topping rubber having a hardness Ht2 of from 70 to 90 degrees. The fineness of each of the organic fiber cords of the bead core wrapping layer is in a range of from 940 to 4200 dtex. The distances between the organic fiber cords of the bead core wrapping layer is in a range of from 0.3 to 1.4 mm.

Abstract: A pneumatic tire 1 according to the present invention includes a plurality of turbulence generation ridges 13 which extend on a surface of a tire side portion 7 in a tire-radial direction and which are arranged at a pitch in a tire-circumferential direction. A protrusion 15 rising from the surface 7a of the tire side portion 7 is formed in the tire side portion 7. Either an inner end portion 13A of the turbulence generation ridge 13 or an outer end portion 13B of turbulence generation ridge 13 is smoothly continuous to a surface of the protrusion 15. An inner end height (H1), which is a height of the inner end portion 13A from the surface 7a of the tire side portion 7, is larger than an outer end height (H2), which is a height of the outer end portion 13B from the surface 7a of the tire side portion 7.

Abstract: A tire 10 comprises a radial carcass reinforcement 2 surmounted radially on the outside by a crown reinforcement 31, the carcass reinforcement 2 being formed of a plurality of metal reinforcing elements 21. The tire also includes two sidewalls 1, at least one of the sidewalls comprising an additional reinforcing reinforcement 5 wherein the additional reinforcement 5 comprises, in the circumferential direction, on the tire a plurality of first parts 51 and of second parts 52 that have rupture strengths, that is to say, forces that rupture per unit width of reinforcement, that are such that the rupture strength of the second parts 52 is lower than the rupture strength of the first parts. The first parts 51 and the second parts are arranged such that they alternate in the circumferential direction.

Abstract: A process and apparatus for manufacturing tires for vehicle wheels, includes building, on a toroidal support, a carcass structure including at least one carcass ply associated, at axially opposite end edges thereof, with annular anchoring structures, the building step of the carcass structure includes forming at least one reinforcing structure, operatively associated with the annular anchoring structures through deposition on the toroidal support of at least one reinforcing element along a predetermined curvilinear deposition path. The deposition of the at least one reinforcing element includes the steps of: cutting to size a piece of at least one reinforcing continuous band-like element fed by a feeding device along a predetermined feeding direction, deforming the piece obtained according to the curvature of a deposition part of the deposition path intended to receive the piece, and depositing the deformed piece at the deposition part.

Abstract: A tire with two beads (11) and a radial carcass reinforcement (12) anchored in each bead by an upturn (15) which forms at least one loop around a circumferential bead reinforcement (13), said upturn—when viewed in meridian section—beginning at a point of origin (A1) that corresponds to the point of intersection between the carcass reinforcement and a line (D) perpendicular to the tire's rotation axis and passing through the radially innermost point (A) of the circumferential bead reinforcement (13). A feature of the tire is that when viewed in meridian section, the end (F) of the upturn (15) is located between said upturn (15) of the carcass reinforcement and the circumferential bead reinforcement (13).

Abstract: A tire and method of building a tire is described wherein the tire has a carcass having a pair of sidewall plies and a bridge ply, each ply being reinforced with cords, the sidewall plies each having a first end which is received between the bridge ply and a belt reinforcing structure; wherein each sidewall ply extends axially outward along the sidewall and extending radially inwardly to the bead core and folded from a position axially outside the bead core to a position axially inside and around the bead core to an axially inner turnup end; said bridge ply having ends which overlap with a respective inner turnup end of said sidewall ply.

Abstract: The present invention is directed to a self-supporting tire. More specifically, the tire has a carcass, a tread, and a belt reinforcing structure located radially outward of the carcass and radially inward of the tread. The carcass is comprised of a reinforcing ply structure extending between a pair of bead portions, a pair of sidewalls, each sidewall located radially outward of one of the pair of bead portions, and a pair of inserts located in each sidewall. A first insert and second insert are located between the innerliner and the ply.

Abstract: A tire for two-wheeled motorcycles of the present invention includes a first carcass layer folded back along circumferential surfaces of bead cores, a second carcass layer folded back along circumferential surfaces of turnbacks of the first carcass layer 5, a belt layer wound spirally along a tire circumferential direction and an intermediate carcass layer provided between the first and second carcass layers 7 and in an inner circumferential side of the belt layer and extending close to a tire maximum width.

Abstract: A tire having a section height, a maximum section width, an upper section above the maximum section width, and a lower section below the maximum section width is provided. The tire includes a circumferential tread, a pair of sidewalls, a pair of bead regions each having a bead core, and at least one carcass ply extending circumferentially about the tire from one bead region to the other. The at least one carcass ply is wound outwardly about at least one of the bead cores and extends toward the tread to form a turn-up portion that terminates at a turn-up end. The turn-up portion includes a concave segment that begins in the bead region and ends short of the turn-up end or at the turn-up end.

Abstract: A tire carcass to be used with any type of tire is shown herein. A tire carcass includes a first ply portion, a second ply portion, each ply portion having an inner sidewall ply, an outer sidewall ply, a first end, a second end, and a bead core, a bridge portion, wherein the first ends of the ply portions are separated by the bridge portion, and at least two bridge plies, wherein the bridge plies span the bridge portion, wherein each of the bridge plies have a first end and a second end.

Abstract: A carcass for a pneumatic tire includes a first annular bead, a second annular bead, a first continuous radial ply, a second continuous radial ply, and a third non-continuous radial ply. The first radial ply has two shoulder portions and two lateral edge portions. One lateral edge portion of the first ply extends from one shoulder portion of the first ply radially inward to a location proximal to the first annular bead. The other lateral edge portion of the first ply extends from the other shoulder portion of the first ply radially inward to a location proximal to the second annular bead. The second continuous radial ply has two shoulder portions and two lateral edge portions. One lateral edge portion of the second ply extends from one shoulder portion of the second ply radially inward to a location proximal to the first annular bead. The other lateral edge portion of the second ply extends from the other shoulder portion of the second ply radially inward to a location proximal to the second annular bead.

Abstract: A pneumatic radial tire has a nominal section width of 255 mm or more, and an outer diameter of 720 mm or more. At least one carcass layer is constructed between paired right and left bead cores with the two end portions of the carcass layer being folded back from the inside to the outside of the tire around the respective bead cores in a way that their corresponding bead fillers are enclosed in the two folded end portions thereof. The length of each bead filler in the radial direction of the tire is 5% to 20% of the section height of the tire. The carcass layer is formed of organic fiber cords each made of at least one type of organic fiber which has an expansion ratio of 1% to 5% when a load of 2.0 cN/dtex is applied to the organic fiber. A sheet-shaped rubber reinforcement layer with a thickness of 0.5 mm to 2 mm, whose rubber has a larger rigidity than that of the sidewall section, is interposed between the carcass layer and a sidewall section on each side of the tire.

Abstract: The invention is directed to increasing the endurance of a tire by providing an oxidation shield strip located in the vicinity of a critical area of the tire. The oxidation shield strip acts as a local oxygen diffusion barrier.

Abstract: There is provide a pneumatic radial tire for heavy loads capable of more effectively preventing a breakdown due to separation of a rubber chafer in an area corresponding to a bead heal portion than before. A pneumatic radial tire 10 for heavy loads has a pair of bead portions 12, a bead core 14 which is embedded in each of the bead portions 12, a radial carcass 16 extending from one bead portion 12 to the other bead portion 12 and turned around the bead core 14 from an inner side to an outer side of the bead portion 12 in a width direction of the tire to be anchored, a rubber chafer 22 disposed over the radial carcass 16 in the opposite side of the bead core 14.

Abstract: The tire includes a first and second axially-spaced bead core, a carcass having at least one belt extending under a tread, and a first ply layer having first and second ends, a first end is located axially outside and adjacent a first bead core, and a second end that is located axially outside and adjacent a second bead core. The carcass further comprises first and second shoulder ply layers each shoulder ply layer having first and second ends, a first end is located under the tread belt, the shoulder ply extending down the side wall region with the second end folding from a position axially outside a respective bead core to a position axially inside and around the bead core. The carcass further comprises an additional reinforcement layer which wraps around the bead and is preferably positioned between the shoulder ply and the first ply layer, although not required.

Abstract: A pneumatic tire may use a combination of high modulus and low modulus plies to provide increased fatigue compression durability without significantly increasing the weight of the tire.

Abstract: In the invention, a run-flat tire including a pair of bead portions having an annular first bead, sidewall portions respectively extending to an outer side in a tire diametrical direction from the bead portions, reinforce rubber layers arranged in the sidewall portions, a tread portion connecting outer peripheral side ends of the sidewall portions via shoulder portions, wherein the run-flat tire includes an annular inflating portion provided on the outside in a tire width direction of the bead portion arranged on the outside of the vehicle, and having an inner circumferential side face opposing to an outer circumferential curved side face of a rim flange when a regular rim is fixed; and an annular second bead arranged at the annular inflating portion, wherein the reinforce rubber layer arranged on the outside of the vehicle has a rubber hardness of 60 to 82 degree, the reinforce rubber layer arranged on the inside of the vehicle has a rubber hardness of 65 to 90 degree, and the reinforce rubber layer arranged

Abstract: This invention provides a pneumatic tire having a highly improved steering stability, wherein a reinforcing layer formed by spirally winding a strip-shaped triaxial fabric or triaxial fabric-rubber composite having a width W satisfying a relation of the following formula (I): W?2/3×31/2×(2b/a+d)??(I) [wherein d=4×(D/(??))1/2×10?2, D is a thickness (total dtex) of cord constituting the triaxial fabric, ? is a density (g/cm3) of the cord constituting the triaxial fabric, and a is weaving density (cords/b mm) in one axis constituting the three axes] in a circumferential direction of the tire is disposed in one or more of a bead portion 1, a sidewall portion 2 and a belt portion 5.

Abstract: A heavy duty tire comprises a bead filler disposed in each bead portion (4). The bead filler (8) comprises: a main layer (13) having a complex elastic modulus E*2 of from 2.0 to 6.0 Mpa; and a fastening layer (12) having a complex elastic modulus E*1 of from 20 to 70 Mpa. The fastening layer comprises a base portion (12B) and an axially inner portion (12A) to have a L-shaped cross section. The height Ha of the axially inner portion (12A) is 35 to 100 mm and not more than the height Hb of the main layer (13), and the radial height Hb is 40 to 100 mm, each from the bead base line.

Abstract: A runflat tire having an improved runflat durability and including sidewall-reinforcing rubber layer 10 having a crescent-shaped cross section disposed axially inward of carcass 6 in sidewall portion 3, wherein the carcass 6 comprises at least one carcass ply 6A in which carcass cords made of an aramid fiber or a polyethylene naphthalate fiber are arranged at an angle of 70 to 90° with respect to the circumferential direction and are covered with a topping rubber.

Abstract: This invention relates to a tire having an improved durability in the run-flat running without damaging the ride comfort in the usual running, and more particularly to a run-flat tire comprising a sidewall portion provided with a side reinforcing rubber layer having a crescent shape at section wherein a cord layer including a polyketone fiber cord satisfying the following conditions of the following equations (I) and (II): ???0.01×E+1.2??(I) ??0.02??(II) [wherein ? is a thermal shrinkage stress at 177° C. (cN/dtex) and E is an elastic modulus at 25° C. under a load of 49 N (cN/dtex)] is disposed in at least a part of a region A ranging from a belt end to a maximum width part of a tire side portion and a region B ranging from a neighborhood of a bead core to a bead filler.

Abstract: A tire, which has a maximum section width, an upper section above the maximum section width, and a lower section below the maximum section width, includes a circumferential tread, a pair of sidewalls, and a pair of bead portions. The tire further includes at least one carcass ply extending circumferentially about the tire from one bead portion to the other and first and second reinforcement plies extending circumferentially about the tire. The first and second reinforcement plies are provided between the at least one carcass ply and at least one of the sidewalls of the tire. The first and second reinforcement plies include lower ends that terminate in the lower section of the tire and upper ends that terminate in the upper section of the tire.

Abstract: Provided is an ultra-low profile pneumatic radial tire for SUV or the like having an aspect ration of 55% or less and a tire outer diameter of 720 mm or more, which has improved load durability while managing a weight reduction without deteriorating driveability. A carcass layer (4) thereof is configured as a single ply, and both ends thereof are folded back around left and right bead cores (7) so as to wrap bead fillers (8). A folded-back portion (4t) is wrapped on the inner side of an end of a belt layer (5) in a range not greater than 10% of the maximum width of the belt layer (5). The hardness of the bead fillers is 65 to 80 in terms of JIS durometer A hardness, and a height hb of the bead fillers (8) from a bead base is brought to 10 to 20% of the height H of a tire cross-section.

Abstract: To provide a pneumatic tire capable of improving the durability of connection points between partition wall parts and a tire inside surface. In a pneumatic tire 10, partition wall parts 24 that extend inward in a tire radial direction from a tire inside surface 17 of tire shoulder parts 21 and whose tire radial direction inside ends contact a rim 12 are disposed. A pair of right and left reinforcement layers 38 are disposed in regions ranging from the partition wall parts 24 to tire side parts 20 via connection parts 29 between the partition wall parts 24 and the tire inside surface 17 such that the reinforcement layers 38 continue from the partition wall parts 24 to the tire side parts 20 via the connection parts 29 between the partition wall parts 24 and the tire inside surface 17.