We used to use brake fluid and/or Easy off oven cleaner (original version) to remove paint from plastic model cars. Easy off was also a good degreaser for metal parts like chains.
I can't imagine either harming metal chrome wheels, but try small sample first.(note: it did remove the chrome on bumpers found on car models)
All bets are off for what ever you use if spokes attached. Different methods were used to coat spokes and it could get ugly if they get splashed with what ever you decide to use.