Originally Posted by
Jipe
So from my experience, between ETRTO349, ETRTO355 and ETRTO406 (and probably ETRTO369), the wheel size is not important, what is important is the bike design and construction and the tires.
One further thought on this. I think the problem here is that you are not able to mount wide 406 tires. I notice a big difference going from 1 1/2" to 2" on my 20" folders. So I suspect if you can't go wider 1 1/4" you would not see much difference.