TIRE HAVING MORE CARCASS LAYERS IN SIDEWALL THAN IN BEAD

摘要

A tire comprising a carcass structure (5) anchored in each side of the tire in a bead (1), each bead having a base which is intended to be mounted on the tire's design mounting rim, each bead being extended radially upward by a sidewall portion, a reinforced summit (11), the sidewall portions joining said summit, said bead further comprising an anchoring zone (2) for anchoring said carcass in said bead, wherein said carcass structure (5) comprises at least one circumferential alignment of cords in the bead anchoring zone (2) which progressively divides in the sidewall portion in at least two circumferential alignments of cords, and wherein a runflat reinforcing member (92) is disposed between said two carcass cord alignments and wherein said runflat reinforcing member is in direct contact with the cords of said two circumferential alignments.