It would be nice if a professional and official racer could at the same time (weather, temperature, wind) track on the N-Ring
M3 E92 7DCT
M3 E92 ZCP 7DCT
M3 E92 GTS 7DCT
M3 E92 GT4 7DCT
all in stock form with stock tires and 19" rims (except GT4 with 18"). Then we could really see the differences between standard M3, ZCP, GTS and GT4.
Does any objective and good driver want to try?