Well my process was wheel off, paint caliper, clean whole wheel including inner rim then rinse wheel, put on a second coat of paint, wheel on. I obviously done this process for all 4 wheels. Took about 1.5-2 hours. Drying time I would say maby 4-5hours maby more, I checked for drips maby 3hrs after and paint was a bit sticky. You can disconnect calipers from carriers and spray them for a better finish, but I didn't have the time. They look just as good with the red paint though in my opinion.