Hi I had problem with diff about a year ego (grinding noise when turning sharp right when the car is cold ) I went to BMW to change the oil for upgraded , that solved the problem for a year, the invoice from the dealer state ,,if the noise is back new rear axle req.'' now the grinding noise is...

I searched the forum and found nothing so I thought I would throw this out to the more informed than I members of this board. When at the dealership for another issue, I was informed of a campaign for the "rear axle carrier". My SA knew no details. Car had no symptoms so I have no idea if...