Thought I'd share a recent experience with some Pro-Comp ATs just in case any of you guys are running them... Keep a close eye on them! I had 26k miles on mine when the front right developed a huge bubble in the tread, the front left started a small bubble, and the two rears started showing signs of cracking between the tread blocks. Luckily this happened slowly so I had warning. These tires were never run low on pressure (usually 45 psi) and were rotated and balanced three different times in that 26k miles. Pro-Comp and Cooper (mfg) refused to give any help even though they supposedly carry a 50k mile treadwear warranty. In the end Discount Tire stepped up without me asking and gave a 100 bucks a tire credit toward some new BFGs. That whole thing could have been a lot worse if one would have come apart on the freeway while towing with family on board. Moral of the story, check your Pro Comps frequently if you have them...
-brian