Honda Motor Co., Ltd.

Takeshi Hotaka

Tetsuya Mizone

Masashi Kitagawa

Shinya Notomi

Emiko Mogi

Shinya Nagata

There is provided a vehicle wheel which can reduce a rolling resistance by rising a tire temperature with a simple structure. A heat-insulation rubber is pasted on all circumference surface of a portion of an outer circumference surface of a rim other than a bead seating portion where a bead portion of a tire closely contacts and a rim flange portion. The heat-insulation rubber suppresses any heat transfer from air in a tire air chamber and from the internal surface of the tire to the rim at the outer circumference surface of the rim which contacts the air in the tire air chamber.

Vehicle wheel

The rubber composites for tire treads include silica; carbon black; and oil constituents, wherein a ratio (A index) of silica contents, carbon black contents, and oil constituents contents is represented by A index=silica contents/(carbon black contents+silica contents+oil constituents contents)&#x2267;0.8; and a ratio (B index) of a complex elastic modulus E* at 30&#xb0; C. and a loss tangent tan &#x3b4; at 60&#xb0; C. is represented by B index=E*/tan &#x3b4;&#x2267;120.

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Saitama, Japan

Takeshi Hotaka