Originally Posted by bigjae1976
The S54 from the E46 M3 was shared with the Z4Ms...unlike the S65. The E9x is nearing the end of its production do I'm sure BMW has ramped down S65 production. I think these fears are overblown. The key ingredient of most of the failures is FI. Although there have been some NA failures...this is the rare exception. Consider how these cars are being beaten on...I meant driven.
I would add that if the supercharger is tuned correctly, running at the proper psi and running the proper octane, a failure is very unlikely as well.