Originally Posted by
50PlusCycling
This is an 11~36 with GS derailleur. I used to run an XT SGS derailleur and 18” wheels, and was always bashing the derailleur. I swapped to 20” wheels and the GS derailleur and no more bashing. The bike doesn’t fold quite as tightly as before, but still fits in a Birdy bag.
Makes sense.
What's the biggest tire size that can be fitted on a Birdy with a 406 rim?