Running 18-20psi for the roads and canal trails bro. She's slower than a normal bike, and the 29er, but soon as you unwind her she's OK, like a chunky 4x4. Downhill shes mental dropped down to 10psi as there is no rebound valve, only pumped up arms/legs to control her, you can't make a mistake on this at speed....like a big bmx with a big cushion of air, all my '80's bmx experience needed for this one.
But so far, I have had to get off on the mucky uphill as she hasn't lost grip or slipped out once, and my lack of fitness and weight struggling....this thing grips and climbs any incline so far....not fast, but all grip and control, a totally different style of ride. I love it...Fatboy is around 30lb, the Norco around 34lb.