JIG AND METHOD FOR MEASURING RUNOUT OF FLANGE SURFACES OF HUB UNIT

There is provided a jig for measuring a runout of a flange surface of a hub unit adapted to be fitted between a plurality of plate-shaped projecting portions of a road wheel mounting flange of a deformed type including the plurality of plate-shaped projecting portions. The projecting portions are formed on an outer circumferential surface of a hub wheel serving as a rotating side member of a road wheel hub unit so as to project radially. Each of the projecting portions has a bolt insertion hole in a distal end portion thereof. The jig is positioned adjacent to a flange surface of the projecting portions so as to form an annular continuous surface.