My setup... oh wait is this not what you meant?
I usually drive the E90 in autox when my tires are almost corded on the E36 and I then swap the wheels over to the E90. I run 18x10s on the E36, so they fit nicely on the E90 as well. The E90 will easily finish off the tires in one event.
The E90 is fun to autox and surprisingly capable, but my E36 is 1000lbs lighter and the "slight" modifications I've done to it make it an absolute blast to drive.