Hi everyone, We have a Raven S Standard Range. It came with 21" wheels and Continental tires and rode quite smooth. I downsized to 19" Slipstreams to have greater selection of tires and more affordable tire options. The 19s have Goodyear Eagle Touring tires. Right after swapping wheels I felt the 19s offered more dampening and a more comfortable ride. After a while the Goodyears feel stiff and the ride is bumpy. Unless I am remembering this incorrectly, it seems the 21s were smoother overall on my regular commute than these 19s. Am I just imagining things? Also, with the 19s, it seems the S rides better in the Low height setting versus Standard height. I don't feel any difference between Standard and Sport setting (with Standard height). Is something possibly wrong with my air suspension? I can hear the air suspension hissing and adjusting so it can't be broken, right? Just to be clear, the ride isn't bone jarring. It is acceptably smooth but I remember it being smoother before. Air pressure hasn't changed. Any thoughts, comments, or suggestions? Thank you.