I just put on a set of Michelin AT/2 tires. The AT/2 (all terrain) has even deeper tread than the M/S (mud and snow) and longer treadwear than the A/S (all season), especially when they're full o' nitrogen. I got 125,000 and 135,000, respectively, out of my last 2 sets of A/S Michelins, and...