Abstract: A vehicle has mounted inside the upper end of a suspension tower of its wheel suspension system, a support assembly for holding the upper end of a macpherson strut. The assembly has an inner bearing (32) supported in a resilient rubber bush (18). The axis of the bearing is arranged eccentrically to the center of one, or preferably two pairs of overlapping rings (21,22 and 33,100). Each pair of rings can be clamped against rotation, or freed to allow one of the rings to be rotated with respect to the other. Rotation of the unclamped ring produces a repositioning of the upper end of the strut so that its misalignment in camber and castor can be corrected. The two rings can then be re-clamped together.