Pneumatic tire

A pneumatic tire provided with an indication portion formed by molding a visually defined area comprising a plurality of letters or figures aligned in a sequence on an outer surface of a side wall of the pneumatic tire, the pneumatic tire comprising

• at least three interconnected recesses provided on the surface of each of said plurality of letters or figures of said indication portion, the recesses each extending in a predetermined extending direction and aligned side by side with each other in an alignment direction crossing the extending direction, wherein:
• the interconnected recesses all have similar cross-sectional configurations and dimensions to generate a repeating visual pattern on the indication portion,
• each recess comprises a curved surface portion of which a center of curvature is disposed outside of the tire, wherein a gradation of brightness of reflected light occurs on the curved surface portion of the recess,
• a ridge line is formed at a raised portion where curved surfaces of two mutually adjacent recesses intersect, the ridge line forming a peak as viewed in cross section,
• the curved surface portion of each recess is formed in an arcuate shape as viewed in cross section, and
• each recess has the depth of 0.1 mm or more and the width of 4 mm or more, and the width of each recess is five times larger or more of the depth.

A pneumatic tire provided with at least one indication portion comprising a plurality of projection portions aligned in a sequence and formed by a vulcanization mold on an outer surface of a side wall of the pneumatic tire, the projection portions projecting outwardly beyond adjacent portions of the side wall outer surface, the pneumatic tire comprising

• at least three interconnected recesses provided on the surface of each of the projection portions, the recesses each extending in a predetermined extending direction and aligned side by side with each other in an alignment direction crossing the extending direction, wherein:
• the interconnected recesses all have similar cross-sectional configurations and dimensions to generate a repeating visual pattern on the indication portion,
• one end side and the other end side of each recess in its width direction are each respectively formed by a curved surface portion of which a center of curvature is disposed outside of the tire, such that a gradation of brightness of reflected light occurs on the curved surface portion of the recess and the gradation of brightness of each recess varies according to a viewing direction or a light direction,
• each of the curved surface portions of each recess is formed in an arcuate shape as viewed in cross section,
• a ridge line is formed at a raised portion where curved surfaces of two mutually adjacent recesses intersect, the ridge line forming a peak as viewed in cross section, wherein brightness of the surface of the raised portion varies across the ridge line,
• each recess has the depth of 0.1 mm or more and the width of 4 mm or more, and the width of each recess is five times larger or more of the depth, and
• radii of curvature of the curved surfaces of the one end side in the width direction and the other end side in the width direction of said each recess are 13 times larger or more than the depth of the recess in which the curved surfaces are provided.

A pneumatic tire provided with at least one indication portion comprising a plurality of projection portions aligned in a sequence and formed by a vulcanization mold on an outer surface of a side wall of the pneumatic tire, the projection portions projecting outwardly beyond adjacent portions of the side wall outer surface, the pneumatic tire comprising

• at least three interconnected recesses provided on the surface of each of the projection portions, the recesses each extending in a predetermined extending direction and aligned side by side with each other in an alignment direction crossing the extending direction, wherein:
• the interconnected recesses all have similar cross-sectional configurations and dimensions to generate a repeating visual pattern on the indication portion,
• each recess comprises a curved surface portion of which a center of curvature is disposed outside of the tire, wherein a gradation of brightness of reflected light occurs on the curved surface portion of the recess and the gradation of brightness for each recess changes depending on a viewing direction or a light direction;
• each of the curved surface portions of each recess is formed in an arcuate shape as viewed in cross section,
• a ridge line is formed at a portion where the curved surfaces of two mutually adjacent recesses intersect, the ridge line forming a peak as viewed in cross section, wherein brightness of the surface of the raised portion varies across the ridge line, and
• each recess has the depth of 0.1 mm or more and the width of 4 mm or more, and the width of each recess is five times larger or more of the depth.