Has anyone had any experience with Duro's Buffalo atv tire? My buddy has a set on the rear of his AC and they really seem to bite in the bog. He has run them for 2 years and they show very little wear. The 6 ply seems virtually indestructable. The ride with the AC's independant rear susp is very good but I'm wondering if the tire is just too stiff for the solid setup on my foreman. Any opinions?