A detailed painting might not be suitable for my wheels with a lot of grooves and crevices. What should I do?
Start with the details first. Let alone a surface where you can spray the paint out then use a brush to collect the paint. Manually go into the obscure details and paint them first.
Once you have all hidden parts coloured, start spraying paint on to the wheel. By this way, you can easily cover all areas, including the hidden ones, of the wheel.