My '92 A (no LSD) is developing a new sound in the right rear (unless my ears deceive me.) It sounds like a truck with mud tires above about 30 mph. The sound varies with vehicle speed and is independent of engine speed. There's no thumping, it's more of a whirring sound. Lateral forces on the car don't affect it (cornering.) The drive train feels tight between tranny & drive shaft and all the way back. No leaks from tranny or differential, all the boots are in very good condition. Replaced transmission oil and differential fluid. Both were clean. Tires have about 10k miles and detailed inspection shows no abnormalities. The car has 205k miles.
Does a failing CV joint sound like a good analysis? Are there other things I should check?
TIA Ephar & Bambi