| 摘要 |
PURPOSE: A tire for a heavy vehicle, whose bead portion is modified, is provided to reduce the damage due to the stored heat of a space by emitting the heat of a space in a bead portion to the inside of a tire. CONSTITUTION: A tire for a heavy vehicle, whose bead portion is modified, comprises: a thread; a sidewall; and a bead portion(1) whose bottom part(2) of the contact side to a wheel comprises a bead heel(21), a bead brush, and a bead toe(23) wherein a protrusion(3) whose height is 1-2mm and interval is 15-20mm is formed. The Height and the interval of the protrusion are controlled according to the pressure of injected air. A space part(4) between the bead heel and the bead brush interconnects with the internal space of a tire.
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