I'm with you on the need for 4WD, but my estimate is up to 6000 lb of weight. The bigger the tractor, the bigger the loads and the tendency to slip...especially true with a loader. Some folks will scoff and say that people used to get work done before 4WD /w3tcompact/icons/tongue.gif, so it's not needed. Well, I also remember enjoying TV when it was black and white, but don't ask me to give up my color./w3tcompact/icons/cool.gif