Rear Wheel Assemblies. This is a complete wheel and tire mounted assembly. Rear Step Dome Yellow Drive Wheel; 896-9033: Available in Red and Ford Gray; 12 x 1.75 lug tread tire, current style stepped rim, hubcap slots, 1/2" axle hole, Used on JD 30, 40, 50, 55 (520), 4020, 7600, 7410, 8400, 8310, ERTL 'A', 7930.