If your tires are not wearing properly or prematurely in your 2011-2016 Ford SuperDuty, its more than likely your wheel bearing or bearings have failed. Don't go to the auto parts store and get some off-brand replacement that is just going to fail again. Replace your wheel bearings with Kryptonite's lifetime warranty wheel bearings. Kryptonite's Wheel Bearings are the highest quality replacements available. Exclusively from Kryptonite and designed to handle higher stresses put on your truck from larger tires and lift kits. Distinctive ball and taper bearing arrangement. Reduced deflection of hub face provides better braking and handling. Improved steering accuracy and behavior. Kryptonite has been using and abusing these bearings on their personal trucks for years and its because of that they feel comfortable offering their Lifetime Warranty! Each bearing comes with 8 new wheel studs and ABS brake sensor. This is a complete bolt in unit and fits both right and left knuckles on 4x4 Heavy Duty 8 Lug Trucks. Average install time is around 2 hours each. Sold individually. Two required if replacing both sides.