Abstract: A pedestal-type mounting assembly for a vehicle seat having a floor plate structure adapted for fixed attachment to the vehicle floor, and a pedestal assembly adapted for hinged or fixed connection to the floor plate structure. The pedestal assembly has a bottom plate which is normally supportably engaged directly on the floor plate structure, and a pedestal projects upwardly from the bottom plate and has a top structure adapted for connection in a conventional manner to a vehicle seat. A hinge structure releasably connects the floor and bottom plates adjacent one edge thereof for defining a horizontal hinge axis to permit tilting of the seat when desired. The hinged structure involves cantilevered hinge pins engaged within hinge support tubes. A manually-releasable lock structure cooperates between the bottom and floor plates adjacent the other edge to fixedly lock the pedestal assembly to the floor plate. When this lock is released, then the seat can be tilted about the hinged axis.