Tire designed to be mounted on a mounting rim comprising rim seats 11 that are inclined outwards. This tire comprises beads 1 designed to come into contact with the mounting rim, each bead having a circumferential reinforcing element which serves to anchor to a carcass reinforcement, this element having a center of rotation about which this element is able to rotate while the bead is being mounted on the rim. This bead has an external profile 8 which, viewed in meridian cross section, comprises a bead seat forming part 81, a side wall 83 and a connecting profile 82 connecting the seat and the side wall, at least one bead being such that the maximum distance L1 from the center of rotation of the bead reinforcing element to the points on the lateral profile 82 of the bead and the minimum distance L0 from the center of rotation of the circumferential bead reinforcement to the points on the lateral profile 83 of the bead satisfy the following relationship: K