Bridgestone Corporation

Masaki Toyoda

Masayuki Hashimoto

Seiichi Kato

Shigeki Kamo

Masahiro Houjo

In order to solve the various conventional problems described above, the present invention provides a tire which is excellent in a braking property and a drivability (WET performance) on a wet road surface and which sufficiently displays an edge effect or a spike effect and is excellent in an on-ice performance (surface braking and driving performance). Further, the present invention provides a tire which enhances a workability in a plant and in which micro drain ditches exhibiting a water film-removing performance are surely formed. A foamed rubber layer provided on a surface of the tire substantially brought into contact with a road surface contains at least one inorganic compound powder having a particle diameter of 10 &#x3bc;m or less in a range of 5 to 20 mass parts per 100 mass parts of a rubber component.

Tire with foamed rubber layer having organic fibers and inorganic compound powder

This invention relates to a rubber composition capable of using in a tread rubber of a tire to improve both an initial gripping performance and a running stability of the tire as compared with those of conventional tires, and more particularly to a rubber composition formed by compounding an indene-containing C-based resin having a softening point of 130&#xb0; C.-190&#xb0; C. and an indene content of 30-80 mass % into a rubber component.

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Kodaira, Japan

Masaki Toyoda