I test rode a Dahon today and while it was a good bike noticed a few problems:
1- It seems like anyone over 4'5 would look like a Russian bear-on-a-unicycle, and it proved true today on a 16" bike for me. Is there anything to do but grin and bear it? Do the 20"ers make you look a bit less ridiculous looking?
2- The small wheels seem to make it twitchy, not too much, but noticeably. I couldn't "sit-n-spin" for the whole test ride, is it something you adjust to or do you always need to hold the bars securely? Same with cornering. I am at the opposite end of the spectrum with my other bike with 29s, so maybe it's just an adjustment?
3- On the same token, what about bike trails, paths, and riding through grass and ground with holes and such in it? Basically, lightweight off-road duties. In an emergency, I may need to do this and walking isn't as attractive, paticularly when I already am carrying a backpack. I wasn't able to do so on the test ride of course.
4- What about bearings? Wheel bearings in particular. The wheels, even with gearing to match the road, will be rolling at least 3/4 faster than a typical 26 or 29 inch wheel, does this decrease bearing service life? About what intervals are reccomended for bearing service and replacement?