I have a 2006 BMW M3. Since I put on wider wheels with wider tires in the front for track use (from 225 19" to 255 18") there is a wobble / shimmy between 70-80 MPH that can be felt in the steering wheel.
Putting the old wheels back makes the vibration disappear. Swapping the wide wheels between front and back does not help.
- I had the wheels/tires re-balanced 3 times. Makes no difference.
- I had the car aligned. Makes no difference. Caster is off (too much positive) for an unknown reason. I don't know the amount but it wasn't alarming.
- The front rotors are dragging a slight bit, the driver side is worse. The driver side wheel gets dustier.
- There was something looking like oil on the top of the front left strut, but it could be mud. I cleaned it and will see if it comes back (if the strut is leaking)
Here is a video of the inner tie rod end, while shaking the wheel at 9-3 o clock with steering wheel locked. https://drive.google.com/file/d/1lgChxJvxHnvQZqOiZ7fhxOYvM6lmJOLh/view?usp=sharing
I can't see much play at the tie rod end although the steering rack is moving a lot, is there any play in the joint? Why is my steering rack moving this much?
One of the wheel is not perfectly straight but it's very slight. Here's a video: https://photos.app.goo.gl/SRaqHiaHmDcGp4pW6
What should I start with?