A tire that can achieve both desired visibility and design properties of a mark provided on a sidewall portion is provided. A tire has a mark provided on a surface of a sidewall portion so as to be raised from the surface. The mark includes a curved surface portion curved so as to project in a direction substantially perpendicular to the surface of the sidewall portion, and a flat surface portion provided on at least one side in a tire circumferential direction of the curved surface portion, and a raised height h of the flat surface portion from the surface gradually decreases with increasing distance in the tire circumferential direction from the curved surface portion.

A tire includes: a pair of beads having a bead core and bead filler extending to an outer side in a tire-radial direction of the bead core; a carcass ply extending from one bead to another bead; an inner liner arranged at a tire inner cavity side of the carcass ply; and an electronic component unit pasted to a tire inner cavity side of the inner liner, in which the electronic component unit is arranged at a tire-radial direction position distanced at least 5.0 mm to the outer side in the tire-radial direction from a tire-radial direction outside end of the bead core.

A tire includes a pair of sidewall portions. An outer surface of at least one of the sidewall portions includes at least one concave mark recessed from a reference surface. The or each concave mark includes a bottom surface and an inner wall surface. The bottom surface includes a peripheral region and a main region. The peripheral region includes a shadow region and a non-shadow region. The shadow region and the non-shadow region are each formed with an uneven surface provided with minute protuberances. A width of the uneven surface of the non-shadow region measured in a direction perpendicular to a contour of the or each concave mark is smaller than a width of the uneven surface of the shadow region measured in a direction perpendicular to the contour.

A radial tire (10) for a heavy vehicle of construction plant type, and more particularly, the sidewalls thereof (20), arranged to minimize the temperature of the tire while guaranteeing its electrical conductivity. The tread (30) comprises two tread wings (31) and a central portion (32). The bead layer (71), the elastomeric coating compound of the carcass layer (50), the second sidewall layer (22) and the tread wing (31) constitute a preferential conductive pathway of the electric charges between the rim and the ground when the tire is mounted on its rim and flattened on the ground.

A tire capable of showing a sufficient cooling effect on a tire side portion when a vehicle travels at a low speed. A pneumatic tire includes a projection group in a tire side portion. A gap is formed between a first projection and a second projection. A size of the gap in a tire radial direction is smaller than a size of each of the first projection and the second projection in the tire radial direction.

A tire capable of showing a sufficient cooling effect on a tire side portion when a vehicle travels at a low speed. A pneumatic tire includes a projection group in a tire side portion. A gap is formed between a first projection and a second projection. A size of the gap in a tire radial direction is smaller than a size of each of the first projection and the second projection in the tire radial direction.

A tire damage detection system (10) is provided with an image data acquisition unit (120) which acquires image data including a rim wheel and a tire side part of a tire assembled to the rim wheel, a rim information acquisition unit (130) which acquires rim information including a radial size of the rim wheel associated with the tire, an damage detection unit (140) which detects an damage portion of the tire side part on the basis of the image data and detects a size of the damage portion with reference to a diameter of the rim wheel based on the rim information, and an output unit (150) which outputs information on the damage portion detected by the damage detection unit (140).

A dynamic wireless power transfer system includes a power transmission coil, a power transmission circuit, a power reception coil, a power reception circuit, and a relay circuit. The power transmission coil is provided in a road. The power transmission circuit supplies electric power to the power transmission coil. The power reception coil is provided in a vehicle. The power reception circuit is connected to the power reception coil. The relay circuit transfers electric power between the power transmission coil and the power reception coil in a contactless manner.

A protrusion portion (110) of a pneumatic tire is formed by a plurality of protrusion parts (111) extended along a tire circumferential direction. The protrusion parts (111) are arranged with predetermined gaps therebetween so as to form a circle along the tire circumferential direction. A length (S1) of the protrusion part (111) in the tire circumferential direction is larger than a maximum width (W1) of the protrusion part (111) in a tire radial direction. In a tire side view, a narrow groove (200) extended along the tire circumferential direction is formed on a surface (111s) of the protrusion part (111).

A protrusion portion (110) of a pneumatic tire is formed by a plurality of protrusion parts (111) extended along a tire circumferential direction. The protrusion parts (111) are arranged with predetermined gaps therebetween so as to form a circle along the tire circumferential direction. A length (S1) of the protrusion part (111) in the tire circumferential direction is larger than a maximum width (W1) of the protrusion part (111) in a tire radial direction. In a tire side view, a narrow groove (200) extended along the tire circumferential direction is formed on a surface (111s) of the protrusion part (111).