My 2008 Tioga with a Super Duty E450 Triton V-10 rides extremely smooth. On smooth roads, it was a pleasure to drive. I just came back from vacation and ran the front tires at 72 psi, and the rear at 80 psi. The ride was extremely smooth, and it tracked beautifully. Prior to leaving, I made sure the primary noise culprit, the side door, was equipped with a number of rubber pads to prevent it from making any noise. In my personal opinion, from driving a number of different make vehicles over a 30 year career in law enforcement, the smoothest riding vehicles were always the Fords, as evident by about 99% or Crown Vicks still in use today.