I don't expect them to last as long as a professional job. I did rub down well, used a 80grit flap wheel to start with, followed on with 240, 400, 800, 1500 sanding wet & dry. Cleaned well with pre paint wipe, 2 coats of lacquer from a rattle can, flatten off with 2000, before polished and waxed. PS used a camping stove to heat rim softly prior to spray
