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 for a civil engineering vehicle the endurance of which has been improved by the addition of an anti-creep layer (30) with a thickness E2 interposed between the airtight inner layer (20), with a thickness E1, and the reinforcer coating layer (46) of the carcass reinforcement (40), with a thickness E3. The thicknesses E1, E2 and E3, being measured in millimetres in a shoulder region forming the transition between the crown and each sidewall of the tire, satisfy the following equations: 2≤E1≤4; 6≤E2+E3 and E1/E2≥0.6. In addition, the viscoelastic loss P60 of the elastomeric mixture M2 of the anti-creep layer (30) is at most equal to 20%.

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 body portion and a part of a folded portion of a carcass of a pneumatic tire are formed by a plurality of plies. The pneumatic tire is provided with a flipper folded from the inside in the tire width direction to the outside in the tire width direction via a bead core to cover the bead core and a bead filler, and an insert is provided between the bead filler and a flipper folded to the outside in the tire width direction. In at least a part of the region where the insert is provided, the thickness and the thickness of a side rubber are substantially the same as the ply thickness obtained by combining the body portion and the folded portion.

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/wheel assembly includes a wheel including a disk and a rim, the wheel having a power reception device attached to an outer peripheral surface of the rim to receive electric power supplied wirelessly from farther outward in a radial direction of the wheel than the rim, and a tire attached so as to cover an outer peripheral surface of the wheel and including a pair of sidewall portions. A gauge of the sidewall portions is 1.5 mm or more.

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 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.

A pneumatic tire includes a run-flat reinforcing layer disposed on an inner side in a width direction of a carcass layer, and a second filler disposed between a turned back portion of the carcass layer and a rim cushion rubber. Additionally, a point on a tire outer circumferential surface is defined, the point is located at a position corresponding to 150% of a rim flange height from a measurement point of a rim diameter of a specified rim, a perpendicular line is defined, and the perpendicular line is drawn from the point to a tire inner circumferential surface. A rubber gauge (G1) of the run-flat reinforcing layer on the perpendicular line, and a rubber gauge (G2) of a region from the turned back portion of the carcass layer to a tire outer surface have the relationship 0<G1/G2≤0.65.

A wireless power reception system includes a power transmission device, a power reception device, a wheel with a rim, and a tire mounted on the rim. The tire includes a bead core and a bead filler, a tire width direction cross-sectional area S1 of the bead filler is one to eight times a tire width direction cross-sectional area S2 of the bead core, the power transmission device can transmit electric power with a frequency of 1000 kHz or less wirelessly, the power reception device is disposed farther inward in the tire radial direction than a tread portion of the tire, the power reception device receives the electric power wirelessly from the power transmission device in a state such that the power transmission device is located farther outward in the tire radial direction than the tire, and the tread portion of the tire is formed from a non-magnetic material.