So the rear tyres just have more meat and are a quarter inch wider than the foot tyres up front
It would be nice to see a pic of the bay
Are they going with the Z4 chassis for weight or cD?
I was thinking this back a while ago... I think BMW may just keep the S65 motor around for the m3/4 series in a sense that a regular m will have the S55 and maybe the black series fighter will have the S65B44