I learned quite a bit about the tires from these recent postings, will probably opt for the newer tire size when I have to replace them, probably have another couple years in them though. As I have stated previously, I have the rear tires loaded 3/4 full with water/methanol but I usually only have my lightweight boxblade on the back when doing heavy loader work. I might try to get some weight added to it to give me a little more ballast plus the heavier a boxblade, the better it works anyway. When that 6' bucket is loaded good the front has all she wants. I got prices for my replacement front tires from our local farmer's Co-op, same size & tread design but in 12 ply and they were right around $130 plus taxes. I think I'll stay with the current size for the fronts and hope the newer rears will take some of the bias out of the ratios. Right now I'm glad to have my front drive back - had a tremendously steep 2 ac. cutting to do today, hadn't been cut in maybe 5 years and was rough. The old 4110 wouldn't take much more of an angle to climb and I was in 2nd gear, but it pulled solid for almost 5 hours like that. Of course with my heavy cutter back there and an empty bucket the front axles aren't under much stress and I guess if the wheels are actually sliding some, they do well on grass.