LAUFFLÄCHENVERSTEIFUNG FÜR ZWEISCHICHTIGEN NOTLAUFREIFEN

摘要

A two-ply radial runflat tire (50) having a belt structure (56), a ply structure (58), two inextensible beads (36a', 36b') and two wedge-insert reinforced sidewalls (77, 78). The outer ply (72) is reinforced by high-modulus, light-weight aramid. The aramid reinforcement material of the outer ply (72) is clamped around the beads (36a', 36b'). The outer ply (72) is prestressed in tension during manufacture of the tire (50). The resultant tire (50) is light in weight and resists upward buckling of the tread (52) during runflat operation.