Originally Posted by mapezzul
The V8 in the 7, 6, and 5 all appear the same as well. Those supports are less crucial.
The V6 would be the least cost effective for BMW to do and as we have seen with recent developments that is the name of the game right now. The N55 has the ability to be built up significantly. a brand new block for a V6 makes no sense at this point, if they do it is against everything we have heard through back channels of late.
As odd as a V6 BMW sounds, it makes sense from a product planning standpoint. M3 buyers will want some meaningful separation from all the N54- and N55-based cars, many of which will wear either an M or an M Performance badge. At the same time, M5 and M6 buyers will want the same separation from the M3, and will be extremely put off if the F8X comes with an S63-derived V8. The only logic split between the two engines is a bespoke V6 derived from the S63 (or if latest rumors are to be believed, from the S65).
BMW created the S65 by lopping off two cylinders from the S85, so why wouldn't they create a new block by implementing the same process on the S63? Or to put it another way: