Abstract: An object of the present invention is to improve propulsion performance on a snow-covered road surface, and provided is a tire with a tread portion having a groove, wherein the cap rubber layer forming the tread portion contains 40 parts by mass or more and 80 parts by mass or less of styrene-butadiene rubber (SBR) having a styrene content of 25% by mass or less in 100 parts by mass of its rubber component, and 60 parts by mass or more of a filler with respect to 100 parts by mass of the rubber component, and is formed from a rubber composition having a loss tangent 10° C. tan ? measured under the conditions of temperature of 10° C., frequency of 10 Hz, initial strain of 5%, and dynamic strain rate of 1% and in deformation mode; tensile of less than 0.28, and a glass transition temperature Tg (° C.) of ?40° C. or lower; and the glass transition temperature Tg (° C.) and the depth G(mm) of the groove satisfy Tg??0.5×G?35.

Abstract: A tire having a tread portion which can improve wear resistance performance when running on uneven ground, wherein the cap rubber layer forming the tread portion contains styrene-butadiene rubber (SBR), isoprene-based rubber, and silica; the content of the styrene-butadiene rubber (SBR) in 100 parts by mass of the rubber component is 40 parts by mass or more and 60 parts by mass or less, and the styrene content of the styrene-butadiene rubber (SBR) is 25% by mass or less; the content of the isoprene-based rubber in 100 parts by mass of the rubber component is more than 30 parts by mass; the content of the silica with respect to 100 parts by mass of the rubber component is 60 parts by mass or less; and the thickness of the tread portion is 9.4 mm or less.

Abstract: It is provided a tire having a tread portion, wherein the cap rubber layer forming the tread portion is formed from a rubber composition containing 60 parts by mass or more and 80 parts by mass or less of styrene-butadiene rubber having a styrene content of 25% by mass or less in 100 parts by mass of the rubber component, and containing 100 parts by mass or less of silica with respect to 100 parts by mass of the rubber component, whose loss tangent (30° C. tan ?) is 0.25 or less; and the thickness of the tread portion is 6 mm or more and 12 mm or less; and an object of the present invention is to improve rolling resistance at the time of starting.

Abstract: A tire 2 includes a pair of chafers 8 and a tag member 26. The chafer 8 comes into contact with a rim R. The tag member 26 includes an RFID tag 54. A state where a load equal to 50% of a normal load is applied to the tire 2 in a normal state and the tire 2 is brought into contact with a flat surface FS is a standard ground-contact state. In the standard ground-contact state, the RFID tag 54 is located between an axially outer end PRa of the rim R and a maximum width position PWs of the tire 2 in an axial direction, and is located between a radially outer end PRr of the rim R and the maximum width position PWs of the tire 2 in a radial direction.

Abstract: A tire 2 includes a pair of heads 10, a carcass 12, a pair of sidewalls 6, a pair of chafers 8, and a tag member 26 including an RFID tag 56. Each of the beads 10 includes an inner apex 40 and an outer apex 42. A carcass ply 48 included in the carcass 12 includes a ply body 50 and a pair of turned-up portions 52. The tag member 26 is in contact with the outer apex 42 on a radially outer side of an end PF of the turned-up portion 52, the RFID tag 56 is located between an outer end PG2 of the outer apex 42 and an outer end PB of the chafer 8, and an outer end 26s of the tag member 26 is located radially outward of the outer end PB of the chafer 8.

Abstract: Provided is a tire having a tread portion with a thickness of 15 mm or less, wherein the cap rubber layer forming the tread portion is formed from a rubber composition containing 40 parts by mass or more and 80 parts by mass or less of styrene-butadiene rubber (SBR) with a styrene content of 25% by mass or less, in 100 parts by mass of the rubber component, and in addition to the rubber component, containing silica and carbon black; and having loss tangent 30° C. tan ? of more than 0.18 measured under the conditions of temperature of 30° C., frequency of 10 Hz, initial strain of 5%, dynamic strain rate of 1%, and deformation mode: tensile; wherein the carbon black content is 15 parts by mass or more with respect to 100 parts by mass of the rubber component, and the ratio of the silica content to the carbon black content is 1 or more; and an object of the present invention is to improve chipping resistance performance when running on a rough road surface at high speed.

Abstract: A tire having a tread portion, which can suppress deterioration in braking performance of tires on an icy road surface after repeated running; and the cap rubber layer forming the tread portion is formed from a rubber composition containing 40 parts by mass or more and 80 parts by mass or less of styrene-butadiene rubber (SBR) having a styrene content of 25% by mass or less in 100 parts by mass of the rubber component, containing silica and carbon black together with the rubber component, and having the loss tangent 30° C. tan ? of less than 0.25 measured under the conditions of temperature of 30° C., frequency of 10 Hz, initial strain of 5%, dynamic strain rate of 1%, and deformation mode: tensile; in the rubber composition, the carbon black content is more than 15 parts by mass with respect to 100 parts by mass of the rubber component, and the ratio of the silica content to the carbon black content is 1 or more; and the thickness of the tread portion is 15 mm or less.

Abstract: Provided is a tire which improves steering stability during high-speed running and the tire has a tread portion, wherein the cap rubber layer forming the tread portion is formed from a rubber composition containing 40 parts by mass or more and 60 parts by mass or less of styrene-butadiene rubber (SBR) with a styrene content of 25% by mass or less in 100 parts by mass of the rubber component, and 100 parts by mass or more of silica with respect to 100 parts by mass of the rubber component; and the tread portion has a thickness of 8.5 mm or less.

Abstract: A tire having improved chipping resistance performance is provided, wherein the tire has a tread portion, the tread portion has a cap rubber layer and a base rubber layer provided radially inward of the cap rubber layer, the cap rubber layer contains, as a rubber component, 40 parts by mass or more and 60 parts by mass or less of styrene-butadiene rubber (SBR) with a styrene content of 25% by mass or less, and 30 parts by mass or less of isoprene-based rubber, in 100 parts by mass of the rubber component, and, as a filler, 100 parts by mass or less of silica with respect to 100 parts by mass of the rubber component; and is formed from a rubber composition having a loss tangent 30° C. tan ? of 0.25 or less measured under conditions of temperature of 30° C., frequency of 10 Hz, initial strain of 5%, and dynamic strain rate of 1%, and deformation mode: tensile; and the ratio of the thickness of the cap rubber layer to the thickness of the base rubber layer is 2.3 or more.

Abstract: A tire includes a first land portion with a ground contacting surface provided with inclined sipes inclined in a first direction to the tire axial direction. The inclined sipes include first and second inclined sipes arranged adjacently in the tire circumferential direction. Each first inclined sipe includes a first deep-bottom portion located on a first circumferential edge side, and a first shallow-bottom portion located on a second circumferential edge side and having a smaller depth than the first deep-bottom portion. Each second inclined sipe includes a second deep-bottom portion located on the second circumferential edge side, and a second shallow-bottom portion located on the first circumferential edge side and having a smaller depth than the second deep-bottom portion. Each second deep-bottom portion is arranged so as to overlap a projection region in which a respective first deep-bottom portion is expanded parallel to the tire axial direction.

Abstract: A putter-type golf club head that, when oriented in a reference position, includes a striking wall extending in the heel to toe direction and defines a substantially planar striking face for hitting a golf ball. A central elongate member is in communication with, and extends rearward from, the striking wall. An upper surface of the central elongate member includes a plurality of separate alignment elements. At least one of the plurality of alignment elements has an edge that extends substantially parallel to the striking face. The length of the parallel edge is substantially equivalent to the diameter of a golf ball.

Abstract: 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.

Abstract: A motorcycle tire comprises a carcass and a tread reinforcing layer. The tread reinforcing layer comprises a belt and a band. The band is composed of a jointless band ply having a developed width less than 65% of the developed tread width. The belt is composed of at least one belt ply having a developed width of 65% or more of the developed tread width. At first positions, the intersecting angle between the belt cords and the carcass cords is 20 to 60 degrees. In the tread portion in a tire meridional cross sectional view, a single arc passing through a point on the tread surface at the tire equator and two points on the tread surface at the tread edges has a radius of not more than 0.7 times the maximum tire cross-section width.

Abstract: A tire including a tread portion, the tread portion having at least one main groove continuously extending in the tire circumferential direction, the tread portion including a rubber having a hardness at 60° C. of 58 or higher and a hardness at 0° C. of not more than 115% of the hardness at 60° C., the tread portion having a S50/S0 ratio of more than 1, wherein S0 denotes the sea proportion (%) in the tread ground contact surface of the new tire, and S50 denotes the sea proportion (%) when the tread portion is worn until the depth of the main groove reaches 50% of that of the new tire.

Abstract: A motorcycle tire comprises a tread reinforcement including a jointless band ply. The jointless band ply has a developed width Wa of not more than 65% of the developed tread width TWe. The tread portion has a tread profile comprising a crown arc portion having a radius R1 of curvature and a pair of shoulder arc portions having a radius R2 of curvature. The radius R1 is smaller than the radius R2 and smaller than 50% of the maximum tire cross-section width Wt. In a normal state of the tire, the axial ends of the crown arc portion are respectively positioned axially inward of the outer edges of the jointless band ply.

Abstract: An elastomer composition, containing a butadiene-based elastomer, and a temperature-responsive resin that changes its hydrophilicity with changes in temperature, the elastomer composition satisfying the following relationships at two given temperatures differing by at least 10° C.: (Elastic modulus at lower temperature and when immersed in water)/(Elastic modulus at lower temperature and when dry)?0.95, and (Elastic modulus at higher temperature and when immersed in water)/(Elastic modulus at higher temperature and when dry)>0.95, the lower temperature being lower than 25° C.

Abstract: The tire has a tread portion for which an intended tire rotational direction is specified. The tread portion comprises first inclined land portions defined between first inclined grooves. The first inclined land portion comprises an outer portion having a first wall surface and a second wall surface, and an inner portion having a third wall surface and a fourth wall surface. The angle ?1 of the first wall surface is smaller than the angle ?2 of the second wall surface, and the angle ?3 of the third wall surface is larger than the angle ?4 of the fourth wall surface.

Abstract: The present invention is characterized by including: a first member having a large diameter part and a small diameter part; a second member configured to be connected to the first member; and an element disposed between the first member and the second member, the first member having a recess on an end surface, the recess having a bottom that reaches a boundary position between the large diameter part and the small diameter part or a certain position on the side of the second member relative to the boundary position, the second member having a projection that is configured to fit into the recess with the element disposed between the recess and the projection, and having a screw hole extending to an inside of the projection to allow a screw part of the plunger to be screwed thereinto.

Abstract: A plasticizer for resins and/or elastomers, the plasticizer containing a group that changes its interaction with respect to an antifreeze with changes in temperature, the group having a lower critical solution temperature of ?20° C. to 20° C.