The 16 inch bikes may weight just as much as a 20 inch one. But one of the things I noticed about the Brompton is the more balanced package when it is folded up. It may not seem like much to all of you big strong guys out there. Just try to lug a Brompton on the bus, manuver through crowded restaurants and bars, pick it up a narrow flight of stairs, all without bumping crowd out other people. And add to that being smaller in a tall youthful worshipping society. If you look weak, no one will help you with your folded package-or take advantage of the situation. Or run the risk of getting thrown out. So perhaps the Brompton and other 16 inch wheels are not as good as the bigger ones. But at least I get home safely, the bike does not get left out to be stolen or vandalized, and without much stress. That balances it for me.