Bike Forums - View Single Post - Schwalbe Marathon sizing 700x38 vs 700x35
Old 01-09-20, 09:23 AM
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Rob_E
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According to this site: https://bikecounterculture.com/2017/...er-calculator/ you are looking at 4 mm of difference, which, in terms of fender clearance, would only be 2mm difference. That seems like next to nothing, but if it's already tight clearance, it might be worth it to size down. I maxed out my tire size in relation to my fenders, and it was fine until I went through some mud. Then it was miserable, with me constantly stopping to clean out enough mud to move forward a little more. I do like a wider tire, though. If I were in your shoes, I might look at what my options might be for a fender with better clearance, or even one of those, under-the-downtube spray-catchers.
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