Can tires be off ground on auto leveling system?

It happens on ours from time to time. Never an issue. I have never even heard of an issue on this forum or any others. Not saying something can't happen, but I've never read of one.

I am with philyg . .

When I can, I will use a blocks of wood to get the fifth wheel "more level" before using the 6 point system...

But like stated, there are times that I did not realize it and unhooked and hit auto level. The result was 1 side being anywhere from 1/2" up to 1" off the ground with no ILL effects.

Not to mention...my 6 jack cylinders are rated at 8,000# EACH... with the RV only being 16,500# loaded, the system is well within its capacities

your leveling system will in most cases take most of the weight off the tires when it does its thing. at least mine does, thats why they are so solid compared to the ols hand jacks we used to put down. if I am in a very unlevel site it will usaly lift one set of tires off the ground depending on how good a job I do with my blocks. it has never bothered me and still feels exactly the same inside..

Steve

Have had a couple of instances where the tires were off the ground, I had no wood, and I was fine for a few days' stay. I don't think its a big deal.

I put block under the wheels if the site is so unlevel that the level system lifts them off the ground when leveling. I do not want all the weight solely on the jacks.
I do not believe the jacks are robust enough to support the weight.
I take the "Better safe than sorry approach."

I have never seen a leveling system that had lateral support built into it. Leveling systems by name, indicate vertical support not foundational support.

Disclaimer: Just because I have not seen one does not indicate they do not exist.

Your question had to do with a trailer and I have very limited experience in that area but safety first is always best. I would not raise my Motorhome off the ground with the hydraulic jacks.

Motor homes
There are those who claim lifting the front tires off the ground will damage the suspension.. This is Male Bovine Produced Organic Fertilizer (BS) as the suspension system won't have any issues with it unless the suspension is worn beyond need for replacement.

HOWEVER only one tire not both Reason follows

And on the rear.. Most Motor homes use drive shaft parking brakes So if one wheel is off the ground there is no parking brake as that wheel can turn freely.

So if you have both front, (or one rear) wheel off the ground and there is a "Stiff breeze" say 80-100 MPH (Been there 4 down) You may get blown away.

IN fact it it would take a whole lot less than 80mph. as little as 5-10 can do it.

Trailers... No parking brakes so the above does not apply
BUT I'd still not want to have both sides off the ground as.. Well.. the jacks are not really designed for that kind of support and it's way to easy to pretzel them.

Since we’ve parked this way quite often and had no issues when lowered, it seems safe to assume it causes no harm.

With tires off of the ground any tire locking mechanism isn't effective.

i don't like that either so i carry 8 pieces of plywood in assorted thicknesses to use under the tire(s) when that happens.