Have a 02 Ford 7.3 SuperDuty. 46,700 miles. Time for some new tires. General highway miles, some towing, etc. I don't have a clue what to buy or what is on there now. Want info on what you guys think are the best and what size. NOT a 4 x 4, NO mud tires. Want a smooth ride, want tires to last as least as long as these originals, someone had mentioned Michlen mrx, but I don't remember where I saw this. and what could I expect to pay for a set. Thanks guys, I appreciate this so much, Trisha in Louisiana