Run-flat tire

摘要

Pneumatic vehicle tire, in particular a run-flat tire, having a carcass, a tread, and two tire beads, having a respective bead core, which are provided for fixing the tire in an associated wheel rim by the fact that the beads overlap with the associated wheel rim. According to the invention, to avoid relative motion between the tire bead and the wheel rim when the tire is subjected to impact load, the bead is designed in such a way in the nonloaded state mounted on the wheel rim the bead does not overlap with the wheel rim in the contact region of the wheel rim flange above the bead core.

主权项

1. A pneumatic tire and rim assembly comprising a carcass, a tread, and two tire beads, each tire bead having a respective bead core which are provided for fixing the tire on an associated wheel rim by the fact that the beads overlap with the associated wheel rim, wherein:
at least one bead is designed in such a way that in a nonloaded state where the pneumatic tire is mounted on the wheel rim and the pneumatic tire and rim assembly is not under load, the bead does not overlap with the wheel rim in the contact region of the wheel rim flange above the bead core, an outer contour of the bead has a S shape in the region of the wheel flange on the side facing the wheel rim flange, a distance between a first and second maxima of the S shape outer contour is in the range of 1.5 mm to 2 mm, and in said nonloaded state where the pneumatic tire is mounted on the wheel rim and the pneumatic tire and rim assembly is not under load, the bead in the contact region of the wheel rim flange above the bead core is separated at a distance from the wheel rim flange.