Abstract: A spare-tire storage arrangement of an automotive vehicle, comprising a tire-storage pan portion forming part of the floor panel structure of the vehicle body and downwardly sunk from the upper face of the floor panel structure, the tire-storage pan portion having a bottom wall and a side wall and being formed with a concavity which is open upwardly and which is surrounded by the side wall, the tire-storage pan portion being internally sized to be suitable for having a regular-sized spare tire received on the inner surface of the side wall at least at a plurality of points of the outer perimeter of the tread portion of the tire; a receptacle member externally sized to fit the inner surface of the side wall of the tire-storage pan portion, the receptacle member having an upper face located above the upper face of the bottom wall of the tire-storage pan portion at a level equal to the difference between the depth of the concavity in the tire-storage pan portion and the width of a temporary-use spare tire.