Bridgestone Corporation

Yohei Okita

Tomotaka Sakiyama

In order to suppress an excessive increase in the temperature of a tread section, a tire includes: a first land portion that is formed to a tread section by providing plural circumferential direction grooves extending around a tire circumferential direction at a spacing in a tire width direction, and that includes plural first recesses provided around the tire circumferential direction of a wall face of the first land portion; and a second land portion that has a wider width than the first land portion, and that includes a greater number of second recesses than the number of the first recesses provided around the tire circumferential direction of a wall face of the second land portion.

Aircraft tire including tread with groove recesses for suppressing heat generation

An object is to make it make it possible to, before a protecting layer is exposed, visually recognize that a final stage of wear of a tread has been reached. A pneumatic tire () for an aircraft has: a carcass ply () that spans between a pair of bead portions; a belt layer () that is provided at a tire radial direction outer side of a crown portion (A) of the carcass ply (); a protecting layer () that is provided at a tire radial direction outer side of the belt layer (); a tread () that is provided at a tire radial direction outer side of the protecting layer (), and at which ribs () are demarcated and formed by circumferential direction grooves; and filaments () that are provided between the protecting layer () and the tread (), or within the tread (), that extend in a tire axial direction, and that are disposed with an interval therebetween in a tire circumferential direction.

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Tokyo, Japan

Yohei Okita