Wheels of the ground is not a good idea as other posters have said. You run the risk of twisting your coach, and the jacks are not designed to support the entire weight of your coach. I put up with unlevel camp sites for a number of years, running the coach up on a few blocks is one thing, but any more if the camp ground can't find me a reasonably level site I will spend my camping dollars some where else. Buts thats just me.