Originally Posted by Joe@ApexRaceParts
I should have clarified further, I was referring to the wheel width and offset looking the same. The tire sizes are different in the picture from what I suggested but will fit on those size wheels. Either 265/35/18 in the front and 285/35/18 in the rear or 275/35/18 in the front and 295/30/18 in the rear are good sizes with the second option being the maximum tire width we suggest for E9x M3's.
Have you ever tried 285/30-18 all around?
I'd say that should work....