Originally Posted by
GhostRider62
I use Challenge latex 29-38mm for 700C and Michelin latex 559x47 for 650B. Challenge tubes are very easy to find, I have to buy the Michelin from Germany online retailers. 559 is fine in 584 (650B)
Thanks. The Michelin one looks like it’s for 26” tires and I’ve read on the Rene Herse site that this sizes works fine for 650b. I found them online likely from where you’ve sourcing them, and I’ll pick up a few.