I have kept my rv on my driveway for up to 6 month over the winter and been doing that for the last 10 years. All I do is
1. Top up the gas and add Stabil,
2. Run the generator and engine at least 1/2 hour every month
3. Top off the gas tank and add more Stabil to keep condensation out of the tank as required over the winter with a gas can
4. Fill all tires about 2 psi above the max rated (in my case 82psi) to minimize flat spots.
5. Park the rv (all wheels)on top of at least 3/4" thick wood boards. This will ensure that the weight is distributed on the driveway and also to ensure that water will not collect around the tires and possibly freeze.
6. Cover the tires and AC. I do not cover my rv over the winter as I found the hard way that the wind will cause the cover to rub against the edge of the roof causing small pin holes. Also, without the cover we can get away at the last minute over the Xmas break without too much work.
I've been doing this on my previous and current unit for the last ten years and had no problems.
