Originally Posted by !xoible

Umm BMW was forced into making a V8 for different reasons, one being to compete with Merc, Audi another is coz E46 M3 GTR couldnt compete due to Porsche's complaint that BMW should use the same power plant used in production. so to go back into ALMS and other competition they had to do a V8.

but now they're going backwards into forced induction after their major FI success in 335/135/X6. It's been announced V10's will no longer be produced and that TT V8 will replace that on M6/M5, and BMW mentioned in more than one occasion that high revving engines will no longer be produced for M cars. which means they will most likely not put the S65 into the new Z4M (if it ever gets produced) and will not have a V8 in the M3