BEAD CORE WITH GROOVES FOR TYRES, PROCESS OF MANUFACTURING SAME AND, TYRES PROVIDED WITH THIS CORE

摘要

A bead ring for reinforcing a bead of a pneumatic tire having a carcass ply comprises, on the bead ring surface, ribs made of a material whose secant modulus in extension, measured at 10% elongation and at 160 DEG 0 C., is equal to at least 70 MPa. Pneumatic tires have such a bead ring, the carcass ply being in contact with the ribs.