I have a srw truck but put on the new Michelin AT2. I am very happy with this tire. I could only squeak 70k out of the oem Michelins. I could have got more but we have snow here. I too noticed that the rear tires with the lsd wore faster then the front. The inside tire would spin going around a corner. The edges of the front would wear but not the center. I had a tire depth gage that measured in 1/32" and it did confirm. I have nothing but great things to say about the at2. I figured they might be noisy but I can't hear them and they work great in the snow.
John
John