Abstract: Provided is a pneumatic tire 1 on which mediate land portions 23a, 23a are formed. Sipes 24 are formed in the mediate land portions 23a, 23b respectively. The mediate land portion 23a disposed inside in a vehicle width direction in a state where the pneumatic tire 1 is mounted on a vehicle has larger sipe density and projects more outwardly in a tire radial direction than the mediate land portion 23b disposed outside in the vehicle width direction in a state where the pneumatic tire 1 is mounted on the vehicle.

Abstract: A region on a sidewall surface of at least one of a pair of side portions of a pneumatic tire includes a maximum tire width position. The region is provided with a plurality of recesses shaped as dimples varying periodically in size along a tire circumferential direction, and with a plurality of trough portions shaped as lines, disposed around each of the recesses, and extending unidirectionally so as to cover the recesses. The recesses are, for example, at least three types of circular recesses, each type having a different size. Here, the circular recesses vary stepwise in size along the tire circumferential direction. The bottom face of the circular recesses is spherical. The maximum depth of the circular recesses is constant irrespective of size, being from 0.3 mm to 1.5 mm.

Abstract: A tread pattern of a pneumatic tire is provided with two outer circumferential main grooves, and at least one inner circumferential main groove provided between the outer circumferential main grooves. A tread profile line of a first land portion between the outer circumferential main grooves protrudes 1 mm or less with respect to a first arc shape formed so as to pass through edge ends on the respective inner sides of the outer circumferential main grooves and edge ends on both sides of the inner side circumferential main groove. Furthermore, a tread profile line of a second land portion on the outer side of the outer circumferential main grooves in a tire width direction protrudes 1 mm or less with respect to a second arc shape which passes through edge ends on the outer side of the outer circumferential main grooves.

Abstract: A pneumatic tire (1), wherein an inter-cord distance (Gcl) between a circumferential reinforcing layer (145) and an inner-side belt ply (142) at a tire equatorial plane (CL), an inter-cord distance (Gcu) between the circumferential reinforcing layer (145) and an outer-side belt ply (143) at the tire equatorial plane (CL), an inter-cord distance (Gsl) between the circumferential reinforcing layer (145) and the inner-side belt ply (142) at end regions of the circumferential reinforcing layer (145), an inter-cord distance (Gsu) between the circumferential reinforcing layer (145) and the outer-side belt ply (143) at the end regions of the circumferential reinforcing layer (145) have a relationship such that 1.20?(Gcl+Gcu)/(Gsl+Gsu)?9.20.

Abstract: A tire center slant groove near tread surface tire equatorial plane extends toward reverse rotation-direction of designated rotation-direction while slanting from a tire equatorial plane side to a tire-width direction outer side, an extension direction angle forms with respect to a tire circumference-direction within range, 3°-10°; and at center slant groove-end portion in reverse rotation-direction, at least a tire-width direction outer side groove-edge of the center slant groove forms into a circular-arc-shaped portion to have the tire-width direction outer side groove-edge angle formed with respect to tire circumference-direction, the angle increasing toward reverse rotation-direction, the tire-width direction outer side groove-edge angle of the center slant groove forms with respect to tire circumference-direction larger than an angle of a tire-width direction inner side groove-edge of the center slant groove forms with respect to tire circumference-direction, and the center slant groove depth gradually d

Abstract: This pneumatic tire includes, on a tread surface, land portions defined by tread edges and by circumferential main grooves extending continuously in the tread circumferential direction; central sipes, in a central land portion on a tire equatorial plane, extending in the tread width direction and formed at a predetermined pitch length, the central land portion being continuous in the tread circumferential direction between adjacent central sipes; and intermediate sipes, in intermediate land portions adjacent to the central land portion on both sides in the tread width direction with the circumferential main grooves therebetween, extending in the tread width direction and being formed at a predetermined pitch length, each intermediate land portion being continuous in the tread circumferential direction between adjacent intermediate sipes. The pitch length of the intermediate sipes is longer than that of the central sipes, and both ends of the central sipes open into the circumferential main grooves.

Abstract: A tire comprises a tread portion 2 comprising blocks 20. At least one of the blocks has a first block wall (25a), a second block wall (25b), and a first region (26a) and a second region (26b) divided by a crossing sipe 30. In a plan view, the first and second block walls (25a) and (25b) are each formed in a convex V-shape so as to have an apex portion 27 protruding toward the outside of the block. The crossing sipe 30 has a first end (28a) positioned on a first side of the apex portion 27 of the first block wall (25a) and a second end (28b) positioned on a second side of the apex portion 27 of the second block wall (25b) in the tire circumferential direction. The first and second regions (26a) and (26b) each have a closed sipe 38 having both ends terminating within the region.

Abstract: A pneumatic tire comprises a tread portion provided with blocks divided by main grooves extending continuously in the tire circumferential direction, and axial grooves connecting between the main grooves. The blocks include a siped block. The siped block is provided with a first sipe extending in the tire axial direction across the block, and second sipes respectively disposed in regions subdivided by the first sipe. Each of the second sipes is a closed sipe whose both ends are closed, and the maximum depth of the second sipe is less than the maximum depth of the first sipe.

Abstract: Provided is a pneumatic tire including a carcass constituted of at least one ply including a ply main body and ply turn-up portions, and a recessed portion formed to be recessed inward in the tire axial direction at an outer surface of the tire in a region between a rim separating point and the tire maximum width position in each sidewall portion. In a section taken along the tire axial direction in a non-rim assembled state, an angle ? is defined as an angle that an outer surface straight line defined by each bead back face portion passing the first intersection and the second intersection forms with respect to the tire axial direction, and the angle ? is in the range from 70 to 100°.

Abstract: A pneumatic tire for a motorcycle that secures durability while improving grip performance in turning. A pneumatic tire for a motorcycle including a belt containing a belt layer formed by coating a plurality of cords with rubber in a tire tread, wherein the tread is provided with cushion rubbers separated from each other in the tire widthwise direction in both sides of the tire equatorial plane by a separated region and located outward in the tire radial direction from the belt, and a base rubber having a modulus higher than those of the cushion rubbers located in the separated region or outward in the tire radial direction therefrom, and Wn, a length of the separated region, and Wb, a length of the base rubber in the cross section in the tire widthwise direction, satisfy the relation: Wn?Wb.

Abstract: An outer side rib 46 is formed at a side relative to the plural circumference direction main grooves that is at the vehicle outer side when the tire is mounted at a vehicle. A land portion of the outer side rib 46 is continuous in the tire circumference direction. Of the plural circumference direction main grooves, an outermost side circumference direction main groove 24 is formed at the vehicle outermost side when the tire is mounted. Fourth lug grooves 42 extend from the outermost side circumference direction main groove 24 toward the outer side rib 46. The groove width of each fourth lug groove 42 widens from the outermost side circumference direction main groove 24 side toward the outer side rib 46 side. The fourth lug grooves 42 terminate at the outermost side circumference direction main groove 24 side relative to a tire ground contact edge 16E.

Abstract: The present invention provides: a pneumatic radial tire for a passenger car, the tire having cross sectional width SW and outer diameter OD satisfying a predetermined relationship formula when the tire is assembled with a rim and inflated at internal pressure of at least 250 kPa; a tire-rim assembly formed by assembling bead portions of said tire with the rim; and a method for using a tire, including preparing a pneumatic radial tire for a passenger car in which cross sectional width SW and outer diameter OD of the tire satisfy a predetermined relationship formula, and using the tire at internal pressure of at least 250 kPa.

Abstract: A run-flat tire of the present invention is a pneumatic radial tire for passenger vehicles which has a carcass composed of plies of radially arranged cords toroidally extending between a pair of bead portions, and the a W/L ratio of the section width W to the outer diameter L of the tire is 0.25 or less.

Abstract: An object of the present invention is to adequately control relationship between a cross sectional width SW and an outer diameter OD of a pneumatic radial tire for a passenger vehicle. The tire is further characterized in that, provided that each half portion in the tire width direction of a ground contact surface of the tire is divided in the tire width direction into three equal portions including a tire-width-direction center portion, a tire-width-direction intermediate portion and a tire-width-direction outer portion from the tire-width-direction center side, rigidity in the tire circumferential direction of the belt reinforcing layer in a region in the tire width direction thereof corresponding to the tire-width-direction outer side portion is lower than rigidity in the tire circumferential direction of the belt reinforcing layer in a region in the tire width direction thereof corresponding to the tire-width-direction center portion.

Abstract: A pneumatic radial tire for a passenger vehicle according to the present invention has an appropriate relationship between a tire cross-sectional width SW and a tire outer diameter OD. Also, a method of using the pneumatic radial tire for a passenger vehicle according to the present invention is to use the above radial tire with at least specified internal pressure.

Abstract: The carcass of this tire (1) has a carcass body and folded sections each folded around a bead core. A circumferential recessed section, which is recessed inward in the tire width direction and extends in the tire circumferential direction, is formed on the outer surface of the tire side section, and turbulence-generating protrusions are provided on the circumferential recessed section. In a cross-section of the tire, wherein the distance between the inner surface of the carcass body section and a rim-separation point where the inner surface comes into contact with a normal rim is defined as a tire reference thickness, and the distance between the inner surface of the folded section and the tire outer surface at the circumferential recessed section is defined as a tire thickness, the multiple turbulence-generating protrusions are provided in an area where the tire thickness is between 20% and 60% of the tire reference thickness.

Abstract: Provided is a pneumatic radial tire for a passenger vehicle, having a carcass constituted of plies as radially-disposed cords and toroidally provided across a pair of bead portions, and including: a belt constituted of one or more belt layers; and a tread, which are disposed in this order on the outside in the radial direction of the carcass, in which: a section width SW and an outer diameter OD of the tire have a ratio of SW/OD?0.26 when SW<165 (mm), and SW and OD satisfy a relationship formula OD?2.035×SW+282.

Abstract: A motorcycle tire includes a tread portion having a designated rotational direction, the tread portion provided with first inclined grooves extending from a central region to a shoulder region, and second inclined grooves extending from a middle region to the shoulder region. Each first inclined groove includes a first tapered portion, and each second inclined groove includes a second tapered portion. In a pair of the first and second inclined grooves that are arranged closest to each other, the second tapered portion is located behind a forward of the first tapered portion such that a straight line connecting between a forward of the second tapered portion and a backward of the first tapered portion has an angle of from 85 to 90 degrees with respect to a circumferential direction of the tire.

Abstract: To reduce noise while suppressing increase in rolling resistance, without affecting the formation of a carcass line, provided is a pneumatic tire (10) including: a carcass (13); an inclined belt (14), and an inner liner (17). The inclined belt (14) is disposed on the tire radial outer side of the crown portion of the carcass (13). The inclined belt (14) includes at least one inclined belt layer (16). The inclined belt layer (16) has cords extending as being inclined at 35° or more with respect to the tire circumferential direction. The inner liner (17) has a thickness of 1.5 mm or more at least in part of a side portion (19).

Abstract: There is provided a pneumatic tire with a tread portion having a plurality of main grooves extending in a tire circumferential direction, and a plurality of land portions partitioned by the main grooves. The tread portion is formed in such a manner that a see-through void area on a first side relative to an equatorial plane of the tire in a tire width direction is greater than a see-through void area on a second side in the tire width direction. Ground contact surfaces of the plurality of land portions formed between the main grooves swell outward from a datum contour line of the tread portion in a tire radial direction, and the amount of swelling of a land portion, positioned on the first side on which the see-through void area is large, relative to the datum contour line is smaller than that of a land portion positioned on the second side.