I've been wondering, as of late, what it would be like to ride a bike with fat tires like that. One thing that bothers me riding my Brompton is that with such small and narrow wheels, the ride can be a bit rough unless the pavement is as smooth as glass. Unfortunately where I live, they are experimenting with new road surfaces that would cause the fillings to pop out of your mouth. I can imagine that with these huge tires, the ride must be quite smooth. I've seen a number of guys riding mountain bikes with these large tires. I must stop one of the riders when I can and ask him/her what the ride feels like. Too expensive to keep going back and forth to the dentist.