As you all know the 3500 dually with factory tires is one mean/hauling machine. Take this from experience. After installing our 245x19.5s last May and driving and pulling our 5er for 6000 miles thru the rockies... These wheels and tires made a HUGE difference in stability. The ride is a little rougher but is worth every penny. I think I will get 100k + on these tires.