I'm running about the same on two bikes. 32mm tires on Raleigh International, and 38mm tires on Viner CX frame.
here's a parallel thread on C&V -
http://www.bikeforums.net/classic-vi...ce-needed.html
Originally Posted by
ThermionicScott
It's really simple: all you need is more than zero clearance. My 650B conversion had a millimeter (or less, with tire variance) to the chainstays and I never had any evidence of tire rub in the first 600 miles. I only dimpled the stays recently because I was bored and wanted to try it.
