Stocks are 8JX19 ET:29 and 9JX19 ET:40
M3/M4/M2 are 9JX19 ET:29 and 10JX19 ET:40.
Somebody has success with this wheels but reduced tire sizes... not M4 specs..
Check this post
http://e89.zpost.com/forums/showthread.php?t=1221790
I wounder if the M4 tires will work as well..