I thought I'd get the wheels painted early on so they could be totally dry when I got around to installing them. The wheel details are molded on the soft side where the centers meet the rim making masking tough. The chrome is very weak too, not only poor coverage but it wipes right off even with the most careful handling. So I brush painted them. It took four kits and all sixteen wheels to get twelve acceptable rims due to the bubbles in and poor coverage of the chrome.
For a detailed explanation of how I did the painting, check this link out:
https://finescale.com/how-to/article...black-recesses