OK so - I had the rear axle bearings replaced, but I’m still hearing a rotational scraping noise while moving (whether gas is applied or not, or whether braking is applied). Gets slightly louder the faster I go. But when I turn, the noise goes away. It’s hard to pinpoint where the noise is coming from. My wife swears it’s in the front; to me it sounds like it’s in the middle (so it would be being transmitted from the source).
I took it back to our mechanic, but he can’t hear it very well - he admits that his hearing is not what it used to be (he’s in his 70s). Only thing he hears is “gear noise in the rear”… meaning he’d have to replace the differential in the back which would be prohibitively expensive and not worth it. He said I should come back in a couple weeks when his younger employee will be back so he can listen for it.