| 摘要 |
PURPOSE: A pneumatic pressure tire prevents a rim chapping phenomenon by preventing a formation of a trap portion between bead portion and a rim and elevating the contacting force thereof with a wheel. CONSTITUTION: Among a bead portion(2), bead heel(4) and a rim line(5), many voids(11) having respective widths between 1.0 to 1.5mm are installed along the circumference direction of the bead portion(2). A gap is formed between the inner surface of a rim flange and the outer surface of the bead portion(2). Thus, pneumatic rushing is passed through this gap to outward, thereby preventing the formation of a trap portion(10). Further, if a pneumatic is filled in the inside of a tire, the voids(11) become flat, thereby increasing the contacting area of the tire and the rim.
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