There was discussion earlier on the affects of ballast in one tire.
In my opinion, having ballast in both tires would help the stability IF, the operator had the bucket in the air and the rear of the tractor tried to come up. I would think if the operator was operating this in a safe mode and not driving around with a loaded bucket in the air there would be no difference. If weight is kept below center of gravity, there should be no difference in the stability of the tractor loaded / unloaded. My dad always preached to me about keeping the bucket low, and I have always tried to remember that.
In my opinion, having ballast in both tires would help the stability IF, the operator had the bucket in the air and the rear of the tractor tried to come up. I would think if the operator was operating this in a safe mode and not driving around with a loaded bucket in the air there would be no difference. If weight is kept below center of gravity, there should be no difference in the stability of the tractor loaded / unloaded. My dad always preached to me about keeping the bucket low, and I have always tried to remember that.