Just had the BIG FOOT installed on 4-20-07 down in FL and they are real professionals.
I when with the fully automatic with the 4 level each with its own pumps that will hold from 12,000 to 20,000 lbs apiece. I had the big foot pads 14 inch x 14 inch also and when with the longest 21 inch hydralic rods, I can lift all 6 wheels completely off the ground and still have 8 inch clearance underneath all the tires.WOW
I was told by the installer never to leave all the wheels off the ground , because in FL they all the wheels with the tires will get stolen .At a $1,000 a piece that would hurt your wallet. Not to memtion bumb you out on your camping trip. If left unattented for a while. This is the best money I spent on this coach.No springs to rust or break.This is bullet proof with 5 years warranty!!!I have seen these on military vehicles and medical buses and also conversion buses into rv.You can leave these down all the time and it won't hurt a thing.