Front end shimmy
 

Hi, what would cause a 02 F250 CC SB V10 6SPD manual to shimmy at 50-60MPH Front tires are new. All tie rods and ball joints are tight. Wheel bearings are properly adjusted. Drive line has new carrier bearing. Shimmy is in the front, makes the shifter jump badly and steering wheel jerk. Thanks, John

Thread moved to the SD forum.

What I'd do is take the wheels off the front, one at a time, and rotate them 45 degrees and then put them back on. As in, rotate the wheel in relation to the hub.

Sounds like that mysterious imbalance you can get even though the wheels are balanced.