Abstract: A tire includes a tread portion provided with a tread profile which is curved in an arcuate shape in a tire meridian section so that the tread portion includes a crown region contacting with the ground during straight running, and a pair of shoulder regions contacting with the ground during cornering by leaning the tire at a certain camber angle. The crown region has a land ratio of not less than 98%, and the shoulder regions have a land ratio of from 85% to 93%. A three-wheeled vehicle has a pair of front wheels and a single rear wheel on which the tire is mounted.

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: A tire includes a tread portion provided with a tread profile which is curved in an arcuate shape in a tire meridian section so that the tread portion includes a crown region contacting with the ground during straight running, and a pair of shoulder regions contacting with the ground during cornering by leaning the tire at a certain camber angle. The crown region has a land ratio of not less than 98%, and the shoulder regions have a land ratio of from 85% to 93%. A three-wheeled vehicle has a pair of front wheels and a single rear wheel on which the tire is mounted.

Abstract: A motorcycle tire comprises a tread portion provided on each side of the tire equator with primary oblique grooves extending from a tread center region to the vicinity of the tread edge, and secondary oblique grooves each having an axially outer end positioned axially inside the axially outer ends of the primary oblique grooves. The secondary oblique grooves comprises a pair of gradually widening parts respectively extending from two extreme ends of the secondary oblique groove in its longitudinal direction toward an intermediate position between the two extreme ends, while gradually increasing the groove width measured perpendicularly to the longitudinal direction, and a pair of gradually narrowing parts which are disposed between the gradually widening parts, and of which groove widths gradually decrease from the gradually widening parts toward the intermediate position.

Abstract: A band 12 of a tire 2 includes a topping rubber, and a cord that is helically wound in a circumferential direction of the tire 2. A carcass 10 includes a first carcass ply 22, and a second carcass ply 24 that is layered over the first carcass ply 22, so as to be located outwardly of the first carcass ply 22 in the radial direction. The first carcass ply 22 is turned up around beads 8. The turnup ends 36 are located inwardly of the second carcass ply 24 in an axial direction. A tip of an apex is located inwardly, in the radial direction, of the end of the tread, and outwardly, in the radial direction, of a position that is distant from the end of the tread in the radially inward direction by one-third of a length of the straight line LH.

Abstract: A motorcycle pneumatic tire includes a tread, a pair of sidewalls each extending from an edge of the tread substantially in a radially inward direction, a pair of beads each extending from one of the sidewalls substantially in the radially inward direction, a carcass spread along an inner side of the tread and sidewalls such that the carcass bridges the pair of beads, and a band laminated on the carcass substantially in the radially inward direction from the tread. The band includes cords and topping rubber, the cords are helically wound in the tire circumferential direction such that absolute value of cord angles to the equatorial plane is 5 degrees or lower, the carcass includes first and second plies including carcass cords and topping rubber such that absolute value of inclination angle of the carcass cords with respect to the circumferential direction is in range of 60 to 90 degrees.

Abstract: A motorcycle tire comprises a tread portion grooved so that twenty narrow annular zones thereof each have a land ratio of 70 to 90%, wherein the twenty narrow annular zones are defined by equally dividing the developed tread width along the tread face by twenty. On each side of the tire equator, main oblique grooves and auxiliary oblique grooves are arranged alternately in the tire circumferential direction and inclined to one tire circumferential direction. The main oblique grooves on each side of the tire equator extend beyond the tire equator to have axially inner ends located on the other side of the tire equator. The auxiliary oblique grooves on each side of the tire equator do not extend beyond the tire equator to have axially inner ends located on the same side of the tire equator.

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: A motorcycle tire comprises a tread portion provided on each side of the tire equator with primary oblique grooves extending from a tread center region to the vicinity of the tread edge, and secondary oblique grooves each having an axially outer end positioned axially inside the axially outer ends of the primary oblique grooves. The secondary oblique grooves comprises a pair of gradually widening parts respectively extending from two extreme ends of the secondary oblique groove in its longitudinal direction toward an intermediate position between the two extreme ends, while gradually increasing the groove width measured perpendicularly to the longitudinal direction, and a pair of gradually narrowing parts which are disposed between the gradually widening parts, and of which groove widths gradually decrease from the gradually widening parts toward the intermediate position.

Abstract: A band 12 of a tire 2 includes a topping rubber, and a cord that is helically wound in a circumferential direction of the tire 2. A carcass 10 includes a first carcass ply 22, and a second carcass ply 24 that is layered over the first carcass ply 22, so as to be located outwardly of the first carcass ply 22 in the radial direction. The first carcass ply 22 is turned up around beads 8. The turnup ends 36 are located inwardly of the second carcass ply 24 in an axial direction. A tip of an apex is located inwardly, in the radial direction, of the end of the tread, and outwardly, in the radial direction, of a position that is distant from the end of the tread in the radially inward direction by one-third of a length of the straight line LH.

Abstract: A motorcycle tire comprises a tread portion grooved so that twenty narrow annular zones thereof each have a land ratio of 70 to 90%, wherein the twenty narrow annular zones are defined by equally dividing the developed tread width along the tread face by twenty. on each side of the tire equator, main oblique grooves and auxiliary oblique grooves are arranged alternately in the tire circumferential direction and inclined to one tire circumferential direction. The main oblique grooves on each side of the tire equator extend beyond the tire equator to have axially inner ends located on the other side of the tire equator. The auxiliary oblique grooves on each side of the tire equator do not extend beyond the tire equator to have axially inner ends located on the same side of the tire equator.

Abstract: A tire which includes a carcass ply and a band ply for reinforcing the carcass ply, the carcass ply having an inner ply and an outer ply which are provided in a radial direction, the inner ply being wound from an inside toward an outside in the axial direction of a bead core to constitute a fold-back portion and the outer ply being provided to cover the inner ply. A width (JW) of the band ply is set to be 80% to 98% of a tread width (TW) and an overlap dimension (LW) of the fold-back portion and the band ply is set to be 15% to 35% of the width (JW) of the band ply.