Here is an update for you guys. As I mentioned just a few days ago, I love looking for stuff on CL. Likely, you all do the same. This set of 135Ms just had to be mine.
These are the E60 version from a 2010 535i M Sport. Specs are 18x8 ET20 with 245/40/18 Potenzas
The concave is perfect and I love these cars with 18s.
I'll grab some more pics as soon as I get them installed!