Originally Posted by swamp2
Also, you can add a drag calculation to get Vmax as well. The M3 is first limiter limited and if removed drag limited. The tricky part of getting a Vmax calculation correct is knowing drivetrain and tire losses. See my post here
I have already done so. Based on 15% drivetrain losses and 10% tyre losses the theoretical Vmax I calculated is 301km/hr.
I would be helpful if I could upload my spreadsheet here but this forum does not offer this functionality yet...