Need advice. Have a F250 Crewcab, 7.3PSD 4x4. I had a 4" Skyjacker suspension lift installed, and the ride is terrible. I also changed to 12.5 x 35 x 16.5 BFG Mud Terrain tires. Is it the springs, shocks, or tires? What can I do to improve the ride w/o going back to stock?

 

Did the ride get worse after you did all these changes? I would say it's the tires and the lift kit. If you have the stock rims and tires, put them on and go for a ride. See if that improves the ride. Those lift kits don't help the center of gravity and can also cause u-joint binding if not properly engineered. That can cause vibrations. There's alot of aftermarket crap out there.