nice pictures and nice comparisons.
it definately looks good on M5 bumper but you have the point. it needs its own thing. :-)
to be honest, i am not that concerned with rims considering aftermarket rims. though previous E46 competition rims were the best looking stock rims out there (at least for me it was). it's bit disappointing that mule rims don't look that great and most likely be the future stock rims if the rims on mule M5 and actualy M5 have identical rims.
keep up the good work guys. i am enjoying it!