Legal reasons is correct. Had the system installed on my Montana and several times the site has been off enough that the system lifted the low side tires off the ground. When I had the unit in for brake service, the service center didn't have a jack that would reach the frame, so we just lifted one side at a time to service the brakes (jack stands were placed under the frame once the wheels were off the ground for safety). Love the system, makes setting up a breeze, put down front jacks, pull TV away, hit the Auto Level and in less than a minute you're level.
2011 Chevy Silverado 3500HD LT Ext Cab 4x4 Duramax/Allison, 2016 Redwood 39MB, Disc Brakes, Mor/ryde IS, GY 17.5" H tires, 5.5K Onan, Dual ACs, auto level, auto sat dish, stacked washer/dryer, residential fridge, King sleep number. Michelle & Ann