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  1. No need to go bigger than 28 on an old frame that’s designed for 23. What are you tryna fit in there?

  2. Moof_the_cyclist on

    The ballpark is that frames are spec’d with about 6mm of tire clearance (broad over generalization). The result is that you can usually push things by a few mm on each side, hence 28’s often working in a 23mm spec’d frame with tolerable clearance. Break a spoke and you are walking your bike as you’ll never fudge it on the side of the road to get home. You may also rub your frame under heavy pedaling load, and flexier frames will likely rub if you get out of the saddle. Those 32’s are a no-go.

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