Interesting information Artillian. Thanks. According to that utility, when you have a loader installed you are to refer to the loader manual for proper ballast. Interestingly, the manual says that if you're operating a loader you should have ALL of the following:
1600 mm (63 in.) or greater rear tread setting.
Rear tires filled with liquid ballast.
Four rear wheel weights. (400X)
Six rear wheel weights. (400CX)
500 kg (1102 lb) minimum 3-point hitch ballast.
My backhoe, weighing in at about 1425 lbs., meets the 3-point hitch ballast requirement, but without the ballast in the tires and on the wheels, I'm going to have problems.