I have a pair of old goodyear all weather whitewall tires that go to a 1950 schwinn bike i have.
I cleaned the whitewalls with westleys bleache wite and they turned out pretty good for 55 year old tires but they have rust stains on the sidewalls from the rim.
I was thinking on useing an acid based cleaner like limeaway,CLR or a mag wheel cleaner but i have not tried it yet as i was wondering if anyone has been faced with this problem before?