I’ll second that one! The knowledge base doesn’t go back that far!

Mine was done by an old-school front-end tech using the latest/greatest 4 wheel alignment machine. When he had all four wheels set up, I asked him how the non adjustable rear wheels came into play. (He pulled a young guy off of a job, and had him watching/helping because it was a good learning experience.) I never really understood, so my best translation was that he assessed the overall 4-wheel footprint because of the default settings. Next, he split the difference of the rear, or compensated for its reading. Somehow he calculated it into the front wheel specifications, and he said that it was a hell of a lot easier to do on the 4 wheel system than on an old-school machiene. Also, it’s spot on because the car feels/handles better than it ever has since I owned it, and if you research my post history, that has been for a long time.

Ball joints can wear out in 20k. Wide/oversized tires can eat them up in a few thousand miles. It’s also a textbook example of a worn idler arm.

99.9999999999% of the people, including professional mechanics, have ZERO clue of the proper preload on the front wheel bearings (they’re supposed to flop around like loose teeth) so it could also be caused by chewed up front wheel bearings. A good front end tech should be able to pinpoint the problem.