I put Wildpeak AT4 on in the middle of January. However, I went with 255/70 R 18. They ride great and aren't any noisier than the Hankook. Wet traction is much better. Only had them in one snow, about four inches and they did fine. Overall I am very pleased with my decision. Had mine...
I changed mine at 44k. Still had some decent tread left, but they were getting really slick on wet roads. Put on new Wildpeak AT4W and really like them so far.