[Greenkirby21]

It really depends. So apparently, the US (not sure if any other countries do this) do PIA, which is Port Installed Accessories.

Apparently, this is a BMW USA thing. They hire their own technicians and provide this service to the customer (4 year warranty, no labor cost, etc). I think it is a very good way for them to make more sales, because to be honest, I am not going to spend 1k on M performance suspension and 2k for labor at a dealership!

So, that being said, it's more of a question of when is PIA being set up (people need to be trained) for the M235i?

Is it available at launch?

It also depends on what parts. Apparently on the F30, the M suspension is not available via PIA, but everything else is.

So, maybe we need to ask someone from BMW of America?

The LSD depends on the type. If it is an ok normal LSD, I would think 1,000 is fair PIA. If it is a more sophisticated one like on M cars, 2.5-3k makes more sense PIA!