I've had them on my LLY Duramax, a 99 F-250, 04 F-250, 08 F-250 & a 08 F-150.
They wore out pretty quick on the Dirtymax. I think I got about 45k out of them. They seem to do really good on the Fords. I have 35k on my F-250 right now & 25k on the F-150. The F-150's wear really quick, but I think that is due to them being on a company truck & ultimately the repairs don't come out of my pocket so they really don't get the care they deserve.
I prefer the Toyo Open Country A/T's. Even though they are made in the same plant as the Nittos, the Toyos are much quieter & seemed to last a lot longer. Same money.
I'm going to try Dune Grapplers next.

 

i have a set of the terra all terrains on my truck. i have the 315's. they do wear fast especially on the rear and not from burnouts. i think the torque just peels them away. if you do get them rotate them religiously. i am happy with them overall compared to the bfg's i had. i could not keep those suckers balanced. i think next im gonna get a smaller tire and take the lift off since im old(er) and poor(er).

 

You already have 35k on your F250? Damn boy! Where have you been going?

 

On mine you have to realize I have the weight of my Duramax spread out over (6) 35's. On the rear I have 4 foot of tires touching the ground, the load spead out tends to wear the tires slower.