I demoed one over the weekend and the thing bounced on flat ground while seated, not unlike pedal bob on a FS when standing up.. the PSI was supposed to be set to 15, I wound up letting out more and more in increments and til the tires were pretty soft and still this persisted.. the guy at the shop was the same weight as me says he runs his at 13. When I explained my experience they seemed pretty shocked. With that said, out of the saddle and climbing and handling were great. Something wasn't set up right, as these bikes are known to be great. It could also be that I am a lame ass too, that is not out of the question. Any advice, I really wanted to love this thing.