I had one of my hyper-silver wheels on my E92 done a couple weeks ago in Austin during the Tri-Marque Concours by these guys. The finish was coming off on the outer edges, so they removed the wheel and cleaned it, deflated the tire and popped the bead so they could mask it, and proceeded to sand and smooth it and re-sprayed the wheel with the 3-stage process (black, silver, clear). It looks great and matches my other wheels exactly. These guys operate in most of the major TX cities and are well worth the reasonable cost!
2013 F30 335i M-Sport 8AT/MPE/MPPK, 2011 128i M-sport Cabrio 6MT/PE