I have a 3015R. For ballast I have a 55 gallon barrel 85% full of concrete with part of an old differential and assorted random chunks of steel for an estimated ~1300 pounds. So far I have picked up some rather large pieces of hickory trunk with it and was completely stable. As is a bucket FULL of moist dirt. I have some 24"ID by 8' concrete pipes to move, they are about 2200 lbs. I am interested to see how my ballast does with that, I am pretty sure the tractor will pick it up. These pipes are the first thing I have had the opportunity to move that I have a pretty exact idea on weight. My goal is to lift them high enough to get them on a trailer. I'll let you know how it goes.