| 摘要 |
PURPOSE: A wear limit displayer makes a driver to easily identify the replacement time of tires and to identify by his sense of hearing. CONSTITUTION: A wear limit displayer(4) of a metal material is installed on the top surface of a rubber protrusion(3). The wear limit displayer(4) comprises a reclamation portion(40) and an exposed surface(41). The reclamation portion(40) is buried in the rubber protrusion(3). The exposed surface(41) is exposed on the top surface of the rubber protrusion(3). At the limit point of the wear of a tread(1), a noise informing an abnormal state is generated by the contact of the ground and the exposed surface(41) of the wear limit displayer(4). Further, a driver easily discriminates the limit point of the wear with his eyes and an independent position displayer is not needed to be formed because the wear limit displayer(4) has another color from the color of the tire, basically.
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