Can tires be off ground on auto leveling system?

I believe most manufacturers recommend against it.

Also, there is a difference between it lifting off the ground for a few seconds and living with it off the ground. As someone mentioned, there is little or no lateral support. Have a storm roll thru with strong winds or get a little rambunctious with the Missus and don't be surprised if they wind up bent.

Far better to support the tires and use them as stabilizers as they are intended.