This is how I will store my rig to keep weight off the tires.
You should check the Lippert Manual before doing this. Here's a quote from one of the older manuals:
WARNING! -
NEVER LIFT THE COACH COMPLETELY OFF THE
GROUND. LIFTING THE COACH SO THE WHEELS ARE
NOT TOUCHING GROUND WILL CREATE AN UNSTABLE
AND UNSAFE CONDITION AND MAY RESULT IN SERIOUS
PERSONAL INJURY OR DEATH.
My observation over the years is that people who frequently put themselves in a position where they can get hurt, eventually do get hurt. We can all laugh at the multitude of warning labels on ladders, but stand on the top step often enough, and you'll know why there's a warning label.
And after the accident happens, we call it bad design.