Update - Now I am around 30K on the tires and would say I have just under 50% tread remaining. I would estimate that I will get another 15-20K miles out of these tires. 45-50K out of AT tires on a 250 diesel is pretty good in my book. I am sold on these tires and contemplating a new vehicle within the next year. The Nitto TG AT tires will go on my next truck before it leaves the dealer lot.