Hey Superfragl,

I thought of something else to prove out, concerning that vibration.

Being a new owner of the XF Im on a major learning curve. I learned this morning we have the old style front spindle and wheel bearings. Ive replaced so many years ago Ive lost count.

My CTS and Chevy short bed trucks had bearing hubs, that were not serviceable but had to be replaced as a unit...expensive buggers.

To the point...Check and tighten the front wheel bearings per spec or replace if needed. It does not take much play to create a wobble in those big a.. wheels and tires.

Best of luck! keep diggin you'll find it!

Joe