| 摘要 |
A heavy-duty, radial ply, pneumatic tire having normally flexible sidewall zones, reinforced, rigid bead zones, and transition zones of gradually decreasing stiffness extending outwardly from the bead zones to the sidewall zones. Each side of the tire includes: (1) an inner group of radial carcass plies, the ends of such plies being turned outwardly over a bead wire bundle and being staged so as to terminate at least at two different points in the transition zone; (2) an outer group of radial carcass plies, the ends of such plies being turned inwardly over the bead wire bundle and being staged so as to terminate at least at two different points in the bead zone; (3) a plurality of chafers having staged upper ends terminating at a plurality of different points in the transition zone; and (4) one or more flippers which encircle the bead wire bundle and at least a portion of an apex strip adjacent to the bead wire bundle.
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