I cleaned them real good with Greased Lightning, followed by MEK (Methel Ethel Keyton)(sp?), and finally Alcohol. A light sanding with 220 grit, followed by another cleaning with MEK. (MEK is the solvent for the two part epoxy)
I did not demount the tires. I removed the cush drive and the brake rotors, masked everything off and sprayed them.
I used a Touch-Up gun I bought at Sears for under $50 with my small shop compressor. Nothing fancy.
Work relatively quickly as the epoxy dries in about 20 minutes at 70 degrees. But this is plenty of time to work. I did one wheel at a time. Cleaning my gun with MEK after each application. One coat covered fine. It seems real hard to get this stuff to run. You can lay it down relatively thick as it isn't dependent on air to dry, it dries with a chemical reaction no mater how thick...........DON"T LEAVE IT IN THE SPRAY GUN while you prepare the second wheel!
Have at it!
2007 Suzuki DL650 V Strom abs
2007 BMW K1200R Sport abs
2004 Honda VFR abs
2001 Moto Guzzi Rosso Mandello