Have had the Michelin LTX M/S on my Ford F250 for over 70,000 miles towing a 13,000 lb 5th wheel. Probably still have 15 to 25% tread left. Second set of tires on the truck with 148,000 miles on it. The ride is slightly harder than the OEM Firestones but not significantly. Have never had a flat or any kind of problem with them. Sidewall strength is completely adequate for windy road conditions. I've rotated them free of charge at Costco every 5,000 miles or so. I'm completely satisfied with them and recommend them highly.