Aluminum Spare Wheel Center Plug for RV Bumper Mount

I swapped out a white steel wheel for a matching aluminum mag. It's much thicker without much flat face for the lower mount bracket/plate so it would have required quite a trim to fit. Also that metal bracket marked up the factory wheel pretty good and I didn't want it buggering up the pretty new wheel so this flanged plug was my answer to the problem.

Wheel bore 3.19" (81mm) so I made the plug diameter 79mm by 20mm deep with a 5mm flange. The flat spot was to ensure the top lug socket would