i know i should do this at the end of the restoration, but anyway...i have got fed up with re-painting steel wheels over the years, so this time, i'd do it properly. Get wheels sandblasted, they come back very rough and with, i think, remains of fine sand in the pores of the metal....rub down with 80 grit.....treat with Metal Ready from Frosts (acid etch)....then without delay 2 coats POR15 silver (avoiding too many runs- POR15 is extremely hard so rubbing down is to be avoided), then POR15 Tie-coat primer...leave for 48 hours, rub down, wash off, dry, apply 3 coats Eastwood silver wheel paint (probably should have been grey), then finish with clear lacquer.....looks really good and even if the wheel paint chips off, it won't notice as there's silver POR15 underneath. Its a lot of work , but in the long run....ade