I have a 2006 F250 4 x 4 crew cab. 26000 miles. This truck will shake uncontrolably when I hit a bump at approx 50 mph. Ford says it needs an alignment. Has anyone out there heard of this happening? I have never taken this truck on any rough terrain. I have also had it aligned 3 times in 26000 mile. It just does not seem right.
Any feed back would be great.

I drove my 2003 F-250 for 48000 miles and It was straight as an arrow. I upgraded to BF Goodrich 295/75/16 and it still drove and handled great. Don't except that as being normal. get it fixed.