Originally Posted by
keyven
How much difference would there be if the limit of my rides would be non-technical trails with protruding roots, soft grassy patches, etc? I'm trying to differentiate it from my M6R, so I wouldn't want the 16" if it's not going to be a big enough upgrade over the Brompton in terms of ride quality.
The diameter of a Brompton wheel is 349mm .. the diameter of a Birdy wheel is 355 mm .. that is 6mm difference in diameter, or a little less than 1/4" .. so the wheels clad with the same tires won't make much of a difference.. what will make the difference in ride quality is the Birdy front suspension and gearing choices .. that's the aspect you should concentrate on..