Morning all. Well I had the wheels re-balanced a few weeks ago because the ones in where very cheap and started to rust great stuff. The problem now is the old balances have left that nasty thick residue. So I decided to get up at 5.30 this morning to give the rims a good scrub along with the arches. I've got all the tar and nasty road muck off but not the balance residue. I've tried autoglym tar remover but no luck. Any ideas or help would be much appreciated.