I have a 07 f250 6.0 with a 10.5 inch bds lift. Tires are 40x15.5 22inch rims Toyo open country mt. I bought the lift and installed it, and when I would get over 30 the truck shook so bad I had to stomp the brakes, so I installed a dual steering stabilizer, and then I had no problem for a couple of months.

Then all of a sudden when I hit a bump at 50+ it shakes so bad I have to slow down to about 25 before it stops. I Checked the steering stabilizer, and all components are tight.

I was wondering what else can cause the death wobble

Any information would be a great help thanks