Mikey are they "open tubular" style tires? Meaning that they basically lie flat when you get them, not curved into a U shape like a conventional clincher. That's how my Challenge tires are constructed. I'm not sure that's why they fit so badly on my wide rims, but I suppose it could be a common factor. Still, there are other tires that are a tight fit on wide rims, too, or at least I would bet there are.