.
Not sure about other brand wheels, but Spitfire and Bones were super easy to scrape off with a razor blade, not cutting, scraping, almost like a coin on a scratchie, if that makes sense?
I could take of how ever much I wanted, either the whole graphic or parts of it to leave something specific behind very easily with a nice sharp simple razor blade of whatever shape or description.
Guessing most wheels with the current technology in wheel printing would be all the same, so you could use a blade, but I know others have used acetone and other chemical products to remove graphics and never harmed the wheels at all.