BEAD AREA STRUCTURE OF PNEUMATIC TIRE FOR IMPROVED CHAFER CRACKING RESISTANCE DURING RUN-FLAT OPERATION

摘要

PROBLEM TO BE SOLVED: To provide a pneumatic tire structure for improved a chafer cracking resistance during a run-flat operation.

SOLUTION: This structure consists of a chafer reinforcement fabric component arranged on a surface of a chafer in a position contacting with a wheel rim flange during a normal tire operation, and during the uninflated tire operation, in particular. The fabric component is a component fixed by extending it around the bead. The fabric component may replace a toe guard, and the chafer reinforcement fabric component reinforces and protects a bead area by extending the component along a surface of the bead area over the whole areas where a surface of a tire contacts with a wheel rim and the rim flange during the mounting of the tire on a wheel and during the operated condition of the tire.

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