I have recently acquired new "used" 14 X 6.5 "Hurricane" Western Wheels (Thanks Robert!).
They look great structurally but the surface is rough and holds dirt.
I got some prices for professional wheel polishing but they were too high for the moment.
I tried scrubbing with different solvents, soaps and cleaners without luck.
Then I discovered a product that "etch cleans" such surfaces called "Eagle One Etching Cleaner Mag".
Simply spray on, wait 30sec and rinse off. (I scrubbed using a long bristle brush for an extra 30 sec and repeated)
See for yourself!!
btw the bottle actually has my wheels on the label :)