I definitely like the look of the SM-10s on Z4Ms but you could say I'm a bit biased....
I can't currently find any photos of black SM-10s on a Z4M, but if you want to take a look at our gallery you can find some of our other wheel designs in black for some inspiration!
https://www.flickr.com/search/?user_..._all=1&text=z4
Let us know if you have any questions!
Thanks
-Tom