And a few generic questions I have for the gang.
First, my good ole' alignment shop nailed the problem. No bearings or bent axles - just a left rear to they said was "waaaaaay out". Specifically, it was -0.68 deg. Spec is .10 to .20 degrees on both rear wheels. According to the tech, a negative value means the left rear wheel was pointing in - in this case, way in, causing the rear end to dog tail right, pushing the nose of the car left, thereby forcing me to keep the steering wheel over hard right to maintain course. Thanks for all your tips in the sister post! And most of that "roar" is gone.
Now for the questions:
Does a negative value for toe mean the same thing for the left wheels as for the right? IOW - does negative mean toe in for the lefts and for the rights, or does negative toe mean toe OUT for the RIGHTs?
Second question - The toe spec for the '05 Malibu, indicated above is .10-.20 deg. If positive values mean "toed out", why would the rear end of a frontwheel drive car have the wheels toed out? ?
Regards and happy headscratching,
-ChrisCoaster