The car is very stable. It has a 8000LB. cap. It needs a 8' deep hole and I used 2 55gal drums welded together and put it in the hole so I could backfill it and water settle it before i put the lift in the hole. It needs concrete in the bottom then put the lift in , then plum it up and set the groung level height then ABC gravel then a 1.5 ft. cap of concrete 4ft. around the lift for safety. I have had my next door neibours Ford 2000 4x4 extended cab longbed diesel truck on it to do a lift kit and was no problem. I also has a motorhome on it. that was a little scary... You just have to keep your eyes open to snag the deal when it comes along.