I have had 2 sets of BFG M/T's from Discount with the lifetime replacement program. My experience with them has been VERY positive! I had to replace one brand new tire after running over a fork that stabbed the sidewall somehow in a KFC drive thru - no problem, free tire, just had to buy a new warranty for the new tire. My dad recently replaced 2 of our first BFG's - they were purchased in 2000 by someone else and mounted on a Jeep. We swapped them onto a different Jeep that is mostly offroaded, and driven on road with 20 psi mostly. Both tires were well used and had sidewall damage - both were replaced, but one particular Discount shop was a little more strict than the other 2 we have visited - still replaced the tire though. No experience with Nittos from Discount, however...