i road on DTM 6 spokes last summer, but the fronts were 16s and the rear were 17s.
I did this only cuz i used to have all 16s, then i cracked one driving through a pothole in chicago. So i didnt want to buy juss one 16, so i bought a couple of 17s for the rear.
Damn...now i dont know what to do...i'll see how it looks, i have so many rims in my basement..