I have been looking for a good buy for over a year, we've rented and test driven quite a few RV's. Here is my problem. The best riding RV's are the DP with full air systems. I do not want to spend that amount money. Lets keep the discussion about Type A gas. I feel real unsafe in a wallowing, rolling RV. Most if not all the rigs I test drove had 19.5 tires, till last week I drove a 34 foot with 22.5 tire and a GVWR of 22000 not the normal 20700. I found the ride far better, less roll. Was this due to bigger tire and heavier GVWR? What are the pro's and con's of the two setups. :question: