Sorry to re-hash this but I am still not totally clear on how much I need (I know, JD recommends about a kagillion). My understanding is that the loader assembly weighs 605 lbs. My tires are not loaded but I have a JD ballast box filled with portland cement. I also have an I-Match. The combined wight is ? I do not do significant loader work (a little top soil or gravel from time to time) but I have read that if not properly balanced, it can be hard on the 4 wheel mechanism.