No personal experiance with them, but I havent heard the best things about those tires. From what I've heard (just hear-say) is that they are hard to balance and usualy require qite a bit of balancing weights with frequent re-balancing. I have also heard that they need to be rotated a lot and that they dont last too long. BUT, seeing as Silver Rubi has 85000 miles on his and my last set of BFG allterains on my truck lasted about 50k that claim probably came from somebody who didnt keep them balanced and rotated.
Again, just what I've heard. I do like the price of them though!