We are buying a brand new RV and selling our old one. We bought the old one on the current seasonal site 4 years ago and have never moved it except to pull it out of the site the other day. It had set 2 years prior to that for a total about 6 years. Should we be aware of any possible issues towing on the road after setting for so long?? The tires weren?t not low and look to be in very good shape.