2015 ecoboost pp bumpsteer issue

[matthewt]

I recently got an alignment done and the only thing that was off since my last alignment was the toe. I believe this was because of the top nut on my bumpsteer kit on passenger side was not tightened properly. The car is lowered and cambered on bc coilovers with a j&m bumpsteer kit. running 285 tire all around. while driving after the alignment was done i noticed heavy bumpsteer going over any uneven part of the road almost as if my car was in a death wobble. i will upload photos of the alignment sheet and of the setup underneath.

 

[Noobz347]

I would refrain from driving it until you have verified that the bump-steer kit installation is 100% verified.

The upper nut secures the bumpsteer stud in the steering knuckle. If it was loose, the passenger-side toe could change independently whenever the wheel was loaded. That is a mechanical steering fault, not something an alignment can correct.

Hopefully, somebody will be along that knows enough about it to direct you further.

 

[fasterthangas]

You lowered the car and altered the factory settings. Bumpsteer is a byproduct of your modifications. You may be able to improve it but it will never be fully cured. I've dealt with it with lifted Jeeps and every lowered Mustangs. My car is only lowered a tad over 1" for reference.