Provided is a pneumatic tire having at least one carcass layer as a skeleton extending in toroidal shape over a pair of bead portions, at least one belt layer and a tread disposed on an outer side in the radial direction of a crown portion of the carcass. In a tire section in the widthwise direction in state where the tire is assembled to an application rim, ratio BD/BW of radius difference BD between radius at a center portion and radius at an end portion in the widthwise direction of an innermost layer of the belt layer, to width BW of the innermost layer, ranges from 0.01 to 0.04, and ratio TD/TW of radius difference TD between radius at a center portion and radius at an end portion of the tread in the widthwise direction of a tread ground surface, to tread ground-contact width TW, satisfies BD/BW<TD/TW.

A pneumatic tire comprises a carcass layer, a belt layer radially outward of the carcass layer, and a tread rubber radially outward of the belt layer. The belt layer includes an angle belt having a belt angle ≥45° and ≤70° in absolute values, a pair of cross belts having belt angles of ≥10° and ≤45° in absolute values and having belt angles of mutually opposite signs, and a reinforcing layer having a belt angle within ±5° relative to a circumferential direction. A width Ws of the reinforcing layer and a cross-sectional width Wca of the carcass layer satisfy 0.60≤Ws/Wca≤0.70. The cross belts are radially outward of the large angle belt. The reinforcing layer is radially outward of the pair of cross belts. A width Wb2 of a wider cross belt of the pair and Wca satisfy 0.79≤Wb2/Wca≤0.89.

A pneumatic tire comprises a carcass layer, a belt layer radially outward of the carcass layer, and a tread rubber radially outward of the belt layer. The belt layer includes an angle belt having a belt angle ≥45° and ≤70° in absolute values, a pair of cross belts having belt angles of ≥10° and ≤45° in absolute values and having belt angles of mutually opposite signs, and a reinforcing layer having a belt angle within ±5° relative to a circumferential direction. A width Ws of the reinforcing layer and a cross-sectional width Wca of the carcass layer satisfy 0.60≤Ws/Wca≤0.70. The cross belts are radially outward of the large angle belt. The reinforcing layer is radially outward of the pair of cross belts. A width Wb2 of a wider cross belt of the pair and Wca satisfy 0.79≤Wb2/Wca≤0.89.

A tire-wheel assembly and a tire used in the tire-wheel assembly, the tire-wheel assembly includes the tire having a tread portion, a sidewall portion, and a bead portion, and a wheel on which the tire is mounted, the tire-wheel assembly configured such that electric power is wirelessly supplied from outside the tread portion in a tire radial direction to a power receiving device disposed inside the tread portion of the tire in the tire radial direction. The tread portion contains low-loss tread rubber having a loss tangent tan δ of 0.25 or less at 60° C., and a ratio Ts/Tb between a gauge Ts of the sidewall portion at a tire maximum width portion and a bead width Tb of a bead core at a center position in the tire radial direction is 15% or more and 60% or less.

A tire pattern structure including a tread pattern and a sidewall pattern is formed by uniformly distributed patterns in the circumferential direction of a tire. The tread pattern is formed by two long spoon-shaped pattern blocks symmetrical with respect to the center of the tire tread and the axial direction of the tire. A spoon-shaped pattern block group is across the center of the tire tread and each interlaced and mapped sideway along the center of the tire tread formed by upper and lower long spoon-shaped pattern block groups. The two spoon-shaped patterns are coupled from a head block to a handle block and bent at the tire shoulder to couple the sidewall pattern formed by the upper and lower sidewall pattern blocks which are formed by a quadrilateral block of two protrusions and three recessed blocks to overcome rough terrains and provide excellent mud and water removing performance.

A carcass layer of a run-flat tire includes a carcass cord formed by twisting together organic fibers, wherein a breaking elongation Eb of the carcass cord, an average thickness Gs of a sidewall between a tire maximum width position of the sidewall and a position separated from the tire maximum width position to the outer side in a tire radial direction by a length equivalent to 15% of a tire cross-section height, and an average thickness Gsh in a tread between a shoulder position where a straight line orthogonal to the carcass layer and passing through a maximum width belt layer maximum width position intersects a surface of the tread and a position separated from the shoulder position toward the inner side in the tire width direction by a length equivalent to 15% of a maximum width belt layer maximum width satisfy: Eb≥20%; Gsh≥10 mm; Gs≥9 mm; and 60%≥Eb.Math.Gsh/Gs≥18%.

A tire has a tire center in the tire width direction. An intersection point of a carcass outer surface with a parallel line extending parallel with a rotation axis and passing through a tire maximum width position is denoted as P1. An intersection point of the parallel line LP with a side surface is denoted as P2. An intersection point of the parallel line with a protrusion portion outer surface of a protrusion portion is denoted as P3. A distance between the tire center and the intersection point P1 is denoted as W1. A distance between the tire center and the intersection point P3 is denoted as W3. A distance between the intersection point P1 and the intersection point P2 is denoted as G1. A distance between the intersection point P2 and the intersection point P3 is denoted as G2. 0.80≤W1/W3≤0.95 and 0.1≤G1/G2≤1.

A tire has a tire center in the tire width direction. An intersection point of a carcass outer surface with a parallel line extending parallel with a rotation axis and passing through a tire maximum width position is denoted as P1. An intersection point of the parallel line LP with a side surface is denoted as P2. An intersection point of the parallel line with a protrusion portion outer surface of a protrusion portion is denoted as P3. A distance between the tire center and the intersection point P1 is denoted as W1. A distance between the tire center and the intersection point P3 is denoted as W3. A distance between the intersection point P1 and the intersection point P2 is denoted as G1. A distance between the intersection point P2 and the intersection point P3 is denoted as G2. 0.80≤W1/W3≤0.95 and 0.1≤G1/G2≤1.

A pneumatic tire includes a longitudinal protrusion portion provided on at least one of tire side surfaces located on either side in a tire lateral direction, the longitudinal protrusion portion projecting from the tire side surface and extending along the tire side surface; and serration provided on the tire side surface in a region including an end portion of the longitudinal protrusion portion, the serration being formed of a plurality of small grooves arranged in parallel, and the plurality of small grooves being inclined with respect to a lateral centerline that passes through a center of the longitudinal protrusion portion in a width direction.

A pneumatic tire includes an annular tread portion extending in a tire circumferential direction, a pair of sidewall portions disposed on both sides of the tread portion, and a pair of bead portions disposed inward of the sidewall portions in a tire radial direction, and the sidewall portions have an average thickness set to range from 1.0 mm to 3.0 mm at a deflection region of each sidewall portion including a tire maximum width position. The bead portions have a bead base width set to range from 115% to 130% of a tread development width of the tread portion.