Originally Posted by daytonatrbo

The issue was isolated to a certain run of driveshafts that had insufficient/incorrect lubricant. They are pretty good at isolating dates when batches of parts were used, and even then they would typically err on the conservative side and extend the period well before and after the parts would have been used up.

The next shipment of shafts was likely fine, and they have fairly accurately isolated when those parts entered the production line.

I don't work for BMW, but I work in manufacturing.