I am new to the forum.

I have an 06 F250 SD 4*4. I put a 6" Fabtech lift with 37" tires. Recently I was driving on freeway and all the sudden my steering wheel start shaking out of control and feels like the front end of the truck is bouncing side to side. I kept going until I slowed the truck down to about 40 MPH.

Does anybody know what this is or have had this problem before? Your advise would begreatly appreciated.

I have had the same thing happen to me. Bad balance on the front tires was my case. Maybe you through a weight.