You are reading a single comment by @j_p_ and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@j_p_
From experience I'd say it's probably not worth the faff for 7mm extra, assuming you can't squeeze a slightly bigger 700c tyre in. 650b tyres between 32 and 40mm are a bit uncommon too. If you really fancy it though the main limiting factor on a disc bike is chainstay clearance as the bulge of a 650b tyre tends not to align with the chainstay dimple. The top of a 700c rim tends to be about where the middle of a 650b tyre is, so if you measure the width there you should have a good idea what could work. Afraid I don't have anything to test with, have just looked into it before