Quote:
Originally Posted by jimbob200521
I did and that seemed kinda odd to me. The Kenda tires are 6 ply so it shouldn't lead to that kind of a difference. And if you go the manufacturers site for the Kenda tires, they rate them at 520lbs 
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I think it's also a matter of construction, not only of ply count. I think 2100lbs total load for an 4x4 ATV is more than enough, because the weight and traction is equally distributed. Whereas on a tractor all the traction is on the rear wheels and it may also have wheel weights, implements and may be pulling ground engaging equipment putting more load on the 2 rear tires. I'm not sure what the exact weight limit is on a cat 0 3pt but must be at least 500 pounds, so that has to be accounted for as well.
At least that's my guess.