I too had MS2 on my dually. Struggled to get 46,000 miles out of them with the 70,000 tread warranty. Michelin along with the new tire to replace the MS2 also has reduced the tread warranty to 50,000. You think they knew they had problem? I ended up replacing the MS2 with Yokahamas at Discount Tire in Kalispell, MT. They allowed $40.00 tread warranty on each Michelin. Other paces I checked would not apply the tread warranty on anything but another set of Michelins. No thanks! Wasn't gonna happen.