Watch CL for mid 80s - early 90s road bikes. Lots of them used to clear 32mm tires. I've got a 1988 Trek 400 I pulled from the trash and fixed up for daily commuting. I can fit 32s on it if I went to a wider fender; that's the only thing holding it back.
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"I feel like my world was classier before I found cyclocross."
- Mandi M.