Bridgestone Corporation

Bridgestone Americas Tire Operations, LLC

Shiho Kamada

Richard S Parr

Sotaro Iwabuchi

In a tire, first and second ridge parts extending in a tire radial direction each have a central portion in the tire radial direction located on an inner side in the tire radial direction with respect to a central portion of the first ridge part in the tire radial direction are provided on an outer surface of a side wall part. A decorative area provided in an outer surface of the side wall part includes a dense area in which the first ridge part and the second ridge part face each other in the tire circumferential direction, and a sparse area in which either the first ridge parts or the second ridge parts face each other in the tire circumferential direction without interposing the other therebetween.

Tire

Tire sidewall

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

A tire includes: a pattern portion, in which plural ridges having ridgelines are arranged adjacent to each other, on a tire surface, the ridgelines including a main body portion and a first extending portion and a second extending portion that extend in different directions from the main body portion in plan view, in which the first extending portion of a ridge and the second extending portion of an adjacent ridge at least partially overlap each other when viewed from a direction orthogonal to an adjacent direction of the ridges, a height of the ridge is from 0.2 mm to 0.5 mm, and ridges adjacent to each other are arranged at a constant pitch of from 0.15 mm to 0.35 mm.

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Tokyo, Japan

Shiho Kamada