In deep snow or slush, you want to get the narrowest tire you can. Modern deisels can be hard on tires just because they produce so much torque. Pull a trailer up a hill at 70mph and you have to be putting some power through those tires. My 91 Dodge deisel gave great tire life but it also had only 160 hp and under 500 pounds of torque. My new 3500 is hard on tires because it's just too easy for me to be hard on them. By working harder to ease up on the throttle a bit, I'm getting much better tire life. GD
