I went on a 200 mile round trip today. Just a few miles from home, I noticed if I made a fairly sharp turn to the right, a grinding noise would come from the left rear. If I made a fairly sharp turn to the left, the noise would shift to the right rear. I thought at first maybe the tires were rubbing, but upon inspection there is no sign of that. Brakes make no noise when stopping. Car is a '96 Formula M6.

Any and all ideas will be considered.

Any rear end work done lately? A lack of limited slip additive can cause weird sounds from the differential during turns.

No rear end work. However, I have a pretty good clue. I looked under there with a flashlight last night, and it appears as if the bolt and bushing in the panhard bar have fallen out. I'll know more later on when I can take a better look.

It was the panhard bar. Fortunately, the bushing was stil there. I put another bolt in and used some locktite. Seems to be fine now.