In my opinion, no need to go LT, stick with a passenger tire. The Cooper AT3 4S, Hankook Dynapro RF10, and Bridgestone Revo 3 would be mild AT tires. I consider the Falken AT3W (I have this) and Toyo AT3 more in the mid-range aggressive AT tires. Those were all tires I saw on the sam's club website. Those are all tires choose between last time I needed tires and I went with the Falkens because they were a little more aggressive and I got a really good deal on them. If you want to look at sizing up just one size there are usually more tire choices in 265/70/17 vs the 4runner's stock 265/65/17. The difference isn't much and you generally have more choices and every once in a while a better price. Good luck