I have a few Electra Fatti-o 24x3 tires. The problem I have is that the Electra rubs between the chain stays on my Schwinn. The Electra has a really sharp edge where the tire meets the sidewall, while the Felt Thick Brick tires look to have a more rounded shoulder. I was wondering if a Thick Brick would fit better, or if it would rub too? I do have a Fatti-o on a Schwinn, but I had to massage the chain stays a liitle for it to fit. I'm building another bike, and I don't want to modify the frame on this one.