I thought I would share this with you guys sense I could find any info when I was looking for a mud tire. This a review from a popular magazine a few years ago
I've curantly put 15000 miles on the tire near as I can tell they will probably get 30000 miles before they will need replacement ( not enough tread left to work well in the fields). That being said I will purchase these tires again, as far as snow goes they are deffinetly the best mud tire I've used so far. They are only d range tires so watch tongue weight when towing. We recently put them to "the" test pulling a gravity wagon and f250 out of muck. I agree with everything the test above states. I was never worried about getting stuck (always had forward pull). They self clean amazingly and so far they have worn very evenly abet quickly, and at 200$ a peice I'd rather by 1 more set of these over the life of the truck than the 1400$ 10.5x33x20 nitto trail grapplers they pulled out.