Quote:
Originally Posted by BMW M3 CRT
Really interesting fact ... seem like the inside source from the german m-forum was right as he tells me, that the new S55 (205kg!) would be a little bit heavier than the ongoing S65 (202kg!).
Seem logical ... if you compare the engine netto weights, an 3.0ltr.I6 is probably lighter than an 4.0ltr.V8, but in gross weight an BiTurbo with racetrack proof cooling need many heavy cooling parts ánd its never less an great weight saving effort to make him in nearly the same weight class als an proven lightweight V8.
Greetings BMW M3 CRT
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This article also mentions the 10kg weight save and quotes a weight of 195kg (which actually adds up with the claim of 10kg lighter than the S65)
Here Biermann is quoted as saying that the S55 shares bore and stroke with the 1M engine... Meaning a 84mm bore and 89,6mm stroke... We will have to wait and see...
http://skiddmark.com/2013/09/bmw-rev...-m3-m4-wvideo/