Vibration from rear

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your vehicle. A vibration in your F-250 Super Duty that only happens between 45-55 mph could point to a few other possible causes. Since you've already addressed the tires, U-joints, and wheel bearings, it might be worth checking the driveshaft balance. An unbalanced driveshaft or a worn carrier bearing (if your truck has a two-piece driveshaft) could cause vibrations. Additionally, inspect the rear differential for any unusual play or wear and the driveline angles. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!