It seems the kevlars do not like dodge solid axles, or stock jeep solid axles. I alwais see them cupping off the fronts quick. The railroad guys(big ass fords) love them, and toyotas have 100% positive feedback. I must add to my first post tho, the new ones have a more worn look to them quicker. I don't know if they will last longer, nor if they have less tread, but they look more "worn" being the same age(DOT within 25 weeks of eachother, and same mileage).