I've been a mu uno owner for about a year now but have never quite been satisfied with bumpy rides. Sidewalks and streets are pretty rough where I live, I've had more than a few occasions where one of my tires have skid up against a raised surface of a sidewalk and almost wiped me out. Same for riding even over the smallest rocks/gravel. I'd like fatter tires to eliminate this but don't have the slightest idea on what to look for. Never upgraded anything on a bike in my life. The extra weight isn't much concern as I don'r have to fold it up and carry it nearly as much as I'm sure a lot of fold up riders intend them for.