I've been using the Cooper Discoverer ST because it's one of the few tires in that size that are not a full mud terrain. It's more of an agressive AT.
1st set went 50,000 with 6/32nds of tread left.
2nd set has 40,000 and I'm at about 6/32nds now, so it's shopping time.
Ok, good to know! Im not sure about running mud terrains, I'll have to check out those ST's. 40-50k sounds decent to me. The only tires I've ever ran from new are my current 285/75, at 60k and would have probably been god fo another 5k plus but some recent wheeling in some loos sharp Arizona stuff kinda tore them up. They suffered less than my front diff though...
Keep the Tundra if it's paid for! If you do get something different just test drive both and buy what you like. You can't go wrong with any of your choices. I will say that the 2nd gen frontier front diff problem is a little over exaggerated by people who don't own one. Most of the failures have been caused by careless driving. Then again me and my good friend drive carelessly in ours all the time and haven't had an issue. I can confirm that the 4.0 V6 is pretty quick and will outrun 1st gen Tundras, and a some other V8's. There is plenty of torque down low for crawling obstacles:sombrero:
I'm kinda surprised at the love for a Tundra, I didn't think they were so popular in the expo community... Or maybe I'm slightly misreading things and it's the 'bought and paid for' aspect that is so supported. If I do get a Frontier I'll wheel it till it breaks or I come across an amazing deal on a Titian diff. I must say though, all support for the Tundra is making me REALLY put some thought into it. I think I made a habit of buying and selling vehicles, I've had six vehicles in 5 years, and I've had my tundra for 3 of those years....