I have a 1955 schwinn black phantom frame. Can anyone tell me what width / diameter / type of rim I'm going to need to get a 3" fat tire on the back. I don't think one of those fat tires will fit on a stock 24" rim. What rim and wheel combos are you guys using to get those fat tires on the rear of those old middleweight frames? Any information you guys have would be greatly appreciated............ Thanks in advance, Tim Hall.