Abstract: A pneumatic tire includes a tread development width TDW in a tread portion and a tire maximum width SW which satisfy 0.70?TDW/SW?0.75. A profile line forming an outer surface of a sidewall portion in a tire meridian cross-section includes at least three arcs having mutually different radii of curvature. In the profile line, a radius of curvature R1 of an arc from a first point to a second point, a radius of curvature R2 of an arc from the second point to a tire maximum width position, and a radius of curvature R3 of an arc forming a portion on an inner side in the tire radial direction from the tire maximum width position satisfy R1>R2>R3. A height SDH in the tire radial direction from a bead heel to the tire maximum width position and a tire cross-sectional height SH satisfy 0.47?SDH/SH?0.50.

Abstract: A pneumatic tire is provided. A bead filler is disposed on an outer circumferential side of each bead core in bead portions, a side reinforcing layer having a crescent-shaped cross-section is disposed on an inner side in a tire width direction of a carcass layer in a sidewall portion, and as physical properties of a rubber that constitutes the side reinforcing layer and a rubber that constitutes the bead filler, a modulus at 100% elongation is in a range from 8.4 MPa to 10.2 MPa, a tan ? at 60° C. is in a range from 0.04 to 0.08, and JIS hardness at 20° C. is in the range from 75 to 79.

Abstract: Provided is a pneumatic tire. At least one land portion is defined and formed by a plurality of circumferential main grooves provided in a tread surface. A main sipe including a body portion and a chamfered portion is formed in at least one side of the body portion. A branch sipe branching from the chamfered portion is provided. The depth of the body portion is equal to or greater than the depth of the branch sipe.

Abstract: In a pneumatic tire including a bead core, a first bead filler on an outer circumference of the bead core, a carcass turned up from an inner side to an outer side around the bead core and the first bead filler, and a second bead on an outer side of a turned up portion of the carcass, a height of an upper end of the first bead filler is 10%-30% of a cross-sectional height, a turned up end of the carcass is on a radially outer side of a maximum width position, an upper end of the second bead filler is between the upper end and the turned up end, the second bead filler has a shape tapered toward the radially outer side, and thicknesses G1 to G3 of the second bead filler at predetermined positions satisfy 0.5<G2/G1<0.8 and 0.4<G3/G1<0.6.

Abstract: A tire includes first through fourth chamfered portions where tire width direction dimensions change in a tire circumferential direction formed along respective vehicle mounting outer edges of first through fourth circumferential main grooves. A second inclined groove adjacent to a vehicle mounting outermost position of the second chamfered portion is formed. A third inclined groove adjacent to a vehicle mounting outermost position of the third chamfered portion is formed. At least one circumferential narrow groove extending in the tire circumferential direction is formed in at least one of a first land portion and a second land portion.

Abstract: Provided is a run-flat tire. A first bead filler is disposed on an outer circumferential side of a bead core, a second bead filler is disposed on an outer side in a tire width direction of a turned up portion of the carcass layer along the turned up portion of the carcass layer, and a thickness G on a first reference line of a side reinforcing layer, a thickness G1 on a second reference line of the side reinforcing layer, and a thickness G2 on a third reference line of the side reinforcing layer satisfy the relationships of 0.8×G?G1?1.0×G and 0.5×G?G2?0.7×G.

Abstract: Provided is a pneumatic tire. At least one land portion is defined and formed by a plurality of circumferential main grooves provided in a tread surface. A main sipe including a body portion and a chamfered portion is formed in at least one side of the body portion. A branch sipe branching from the chamfered portion is provided. The depth of the body portion is equal to or greater than the depth of the branch sipe.

Abstract: A pneumatic tire is provided. In a meridian cross-section, an external contour shape of the bead core is a polygon formed by common tangent lines of a plurality of circumferential portions of a bead wire, the external contour shape includes a single vertex located toward the outside in a tire radial direction, an internal angle formed by two sides sandwiching the vertex is an acute angle, a bottom side of the external contour shape is inclined with respect to the tire lateral direction by from 2° to 9°, and the carcass layer is bent and folded back along a circumference of the bead core in a bead portion, a folded back portion of the carcass layer from a position of an outer end of the bead core in the tire radial direction extends toward a sidewall portion in contact with a body portion.

Abstract: Provided is a pneumatic tire with wet steering stability performance and dry steering stability performance enhanced in a well-balanced manner. A dimple group is composed of a plurality of dimples (100 to 104) disposed at intervals and aligned in a tire circumferential direction. When the minimum center-to-center distance between different dimples (100, 102) in an identical dimple group is defined as K and the minimum center-to-center distance between dimples (104, 100) in different dimple groups is defined as L, the ratio L/K is 3.5 or more and 10.0 or less and the minimum center-to-center distance L is 20 mm or more and equal to or less than a ground contact length.

Abstract: Of layers configuring a bead core of a pneumatic tire, the width W0 of one of the layers including the greatest number of rows, the width W1, W2 of other of the layers located respectively innermost and outermost in the radial direction satisfy W1>W2 and W2?0.5×W0. The position of width W0 is inward in the radial direction of the center of the bead core. A carcass is folded and curved along the bead core and extends toward sidewalls where a folded back portion of the carcass contacts a body of the carcass. A rubber occupancy ratio in a closed region formed by the body and the folded back portion is 0.1% to 15%. The cross-sectional area S2 and hardness H2 of a filler outward of the carcass in the lateral direction, and the cross-sectional area S1 and the hardness H1 of the side reinforcing layer satisfy 0.12?(S2×H2)/(S1×H1)?0.50.

Abstract: A pneumatic tire includes a tread development width TDW in a tread portion and a tire maximum width SW which satisfy 0.70?TDW/SW?0.75. A profile line forming an outer surface of a sidewall portion in a tire meridian cross-section includes at least three arcs having mutually different radii of curvature. In the profile line, a radius of curvature R1 of an arc from a first point to a second point, a radius of curvature R2 of an arc from the second point to a tire maximum width position, and a radius of curvature R3 of an arc forming a portion on an inner side in the tire radial direction from the tire maximum width position satisfy R1>R2>R3. A height SDH in the tire radial direction from a bead heel to the tire maximum width position and a tire cross-sectional height SH satisfy 0.47?SDH/SH?0.50.

Abstract: In a cross-section of a pneumatic tire, a contour of the bead core is a polygon formed by tangent lines of circumferential portions of a bead wire, the contour includes a vertex with an acute angle and a bottom side opposite the vertex, the carcass layer is folded back along a circumference of the bead core in a bead portion, a folded back portion of the carcass layer from an outer end of the bead core extends in the radial direction, and a distance in the radial direction between a center of an arc profile of a tire outer surface and a straight line extending in the lateral direction through the vertex is within 20% of a radius r of the arc, and a distance in the lateral direction between the center of the arc and a straight line extending in the radial direction through the vertex is within 2r±0.4r.

Abstract: A pneumatic tire is provided. A bead filler is disposed on an outer circumferential side of each bead core in bead portions, a side reinforcing layer having a crescent-shaped cross-section is disposed on an inner side in a tire width direction of a carcass layer in a sidewall portion, and as physical properties of a rubber that constitutes the side reinforcing layer and a rubber that constitutes the bead filler, a modulus at 100% elongation is in a range from 8.4 MPa to 10.2 MPa, a tan ? at 60° C. is in a range from 0.04 to 0.08, and JIS hardness at 20° C. is in the range from 75 to 79.

Abstract: A pneumatic tire includes protrusion portions formed on at least one tire side portion of tire side portions located on both sides in a width direction, projecting from a tire side surface that is a surface of the tire side portion, and extending along the tire side surface, the protrusion portions having an angle ? within a range of no less than 6% and no more than 50% of an angle of one round in a circumferential direction, the angle ? being relative and in the circumferential direction between two protrusion portion end position lines that respectively extend in a radial direction through different end portions of both end portions in an extending direction of the protrusion portions, and the tire side portion having a thickness at a tire maximum width position within a range of no less than 2 mm and no more than 9 mm.

Abstract: A pneumatic tire includes protrusion portions projecting from and extending along a tire side portion, the protrusion portions being disposed on an outer side in a tire radial direction in an placement region that is a region from a position of 15% to a position of 85% of a tire cross-sectional height from a reference position on an inner side in the tire radial direction of the tire cross-sectional height, and including a first extending portion extending along the tire side portion in a single arc shape or a single straight shape, the first extending portion having a length within a range of no less than 1.0 and no more 6.0 times a height in the tire radial direction of the placement region, and the tire side portion having a thickness at a tire maximum width position within from 2 mm to 9 mm.

Abstract: A pneumatic tire includes protrusion portions formed on, extending along, and projecting from at least one tire side portion, the protrusion portions including at least one bend portion at a position where a direction in which the protrusion portion extends changes, and also including extending portions defined by the bend portion. Where the extending portion disposed on an outermost side in the radial direction among the extending portions is taken to be a first extending portion, a highest extending portion that is the extending portion in which an average extending portion height that is an average height from the tire side portion of each extending portion is highest is any one of the extending portions other than the first extending portion. The tire side portion has a thickness at a tire maximum width position within a range of no less than 2 mm and no more than 9 mm.

Abstract: A pneumatic tire includes protrusion portions formed on a side portion of tire side portions located on both sides in a width direction, projecting from a side surface of the side portion, and extending along the side surface, the protrusion portions including a bend portion where a direction in which the protrusion portions extend changes, and also including extending portions defined by the bend portion, a width of the extending portions changing at a position straddling the bend portion, a first extending portion having the longest length among the extending portions having a maximum width of no less than 1.0 mm and no more than 3.0 mm, and a thickness of the side portion at a maximum tire width position being no less than 2 mm and no more than 9 mm.

Abstract: In a pneumatic tire including a side reinforcing layer, the maximum width W0 of a bead core and the widths W1, W2 of the bead core at innermost and outermost sides in the radial direction, respectively, satisfy W1>W2 and W2?0.5×W0. W0 is toward the inside of the center of the bead core in the radial direction. A carcass is folded and curved along the bead core, and a folded back portion of the carcass extends toward the sidewalls while contacting a body of the carcass. A rubber occupancy ratio in a region formed by the body and the folded back portion of the carcass is 0.1% to 15%. The cross-sectional area S2 of a filler toward the outside of the carcass in the lateral direction, the hardness H2 of the filler, the cross-sectional area S1 of a side reinforcing layer and the hardness H1 of the side reinforcing layer satisfy 0.15?(S2×H2)/(S1×H1)?0.60.

Abstract: In a cross-section of a pneumatic tire, a contour of the bead core is a polygon formed by tangent lines of circumferential portions of a bead wire, the contour includes a vertex with an acute angle and a bottom side opposite the vertex, the carcass layer is folded back along a circumference of the bead core in a bead portion, a folded back portion of the carcass layer from an outer end of the bead core extends in the radial direction, and a distance in the radial direction between a center of an arc profile of a tire outer surface and a straight line extending in the lateral direction through the vertex is within 20% of a radius r of the arc, and a distance in the lateral direction between the center of the arc and a straight line extending in the radial direction through the vertex is within 2r±0.4r.