I would put the tires (they will probably rot after many years though) under the rig and install a skirting to help keep the critters and weather out. I would NOT use jack stands but instead use cinder blocks with leveling shims on top. Jack stands might fall over in an earthquake.
Stan and Terri
Oak Harbor, WA
2008 Chevy 2500HD D/A
2007 Cruiser CF30SK
Glide Ride Pin Box
Reese 16K Slider
Thanks. I actually have a separate policy for my unit because I built a 12 x 24 covered deck which also covers my trailer. The upper deck connects to a 16 x 16 lower deck which then is connected to my boat dock.
I assume you've checked with the park? Some States require you to keep tires on and register the camper every year as a camper. If it has no tires, it might be considered a permanent structure, like a home, and your tax liability or permission to remain might be jeapordized. Just thought this was worth mentioning.