RUN-FLAT TIRE WITH AN IMPROVED BEAD TO RIM INTERFACE

摘要

The run-flat tire (10) has a tread (12) and a belt package with belt plies (81) interior to the tread (12). A plurality of radially reinforced carcass layers (40) are positioned interior to the belt plies (81) and include at least one carcass layer that extends between spaced apart annular beads (30). The tire (10) has a pair of sidewalls (41) each extending radially inward from shoulders (83) at lateral edges of the belt package to the annular beads (30). The sidewalls (41) have a plurality of sidewall stiffening members (50) to support the tire (10) during a loss of inflation pressure. The spaced apart beads (30) include bead cores (32) placed at a predetermined diameter with respect to a rim diameter, dual bead fillers (34, 37) above the bead cores (32), a heel corner (31c) spaced at a radial gap distance from a rim flange (84) and rim interface components having a seat interface distance below the bead core (32) for mounting the run-flat tire (10) on a conventional rim (80).