The genuine M2/3/4 437m wheels are the exact same offset as the Z4 E89 wheels e.g. 326M. That's one reason I went for them too, along with strength and lightness from being forged. The forging process is impressive to watch!
My reading on the subject suggested not messing around with offsets. Scrub radius:
http://www.tuneruniversity.com/blog/2011/04/wheel-tech-part-ii-size-matters/
This is a good resource to help you visual aid measurements:
https://www.willtheyfit.com/
Rich
My reading on the subject suggested not messing around with offsets. Scrub radius:
http://www.tuneruniversity.com/blog/2011/04/wheel-tech-part-ii-size-matters/
This is a good resource to help you visual aid measurements:
https://www.willtheyfit.com/
Rich




