I have a set of BFG All-Terrains that I barely got 9,000 miles out of. I do 95% city driving. Stop and go, hard acceleration, hard braking, lots of cornering and turns, and some off roading. Also went through 3 sets of Wrangler AT/S in 30,000 since I got the truck until switching to the BFGs for hopes of getting more life out of them. I even went as far as rotating them every 2,000 and making sure I was always perfectly aligned. Its time for another set and I saw that ProComp advertises a 40,000 mile tread life warranty on their Xtreme All Terrains. I read through the warranty information but it didn't really say much. I don't see how I could possibly get 40,000 miles out of these tires? It there shot in say 20,000 will I get new tires at a pro-rated rate or what? Does anyone have any personal experience with these tires or the warranty? I am looking at 35X12.5R20 size?