I was using the 250 or 300lb cart. I would have to look up the weight. I had a gutted out bull on it, which was find until I started to side hill. All the weight went to the down hill side of the cart and folded the wheel. A single wheel cart would not do this. I know several friends that have taken out whole elk on the "Carryall Buddy" cart going side hill without the problem I had.