How exactly does BMW miss the target by 256 pounds? By quoting a dry weight without fluids and also likely with the optional carbon ceramic brakes which this F80 M3 does not have. This is a manual car by the way which means that a DCT M3 without the carbon ceramics will likely tip the scales at over 3600 pounds with a full gas tank.
How many pounds lighter is the new 6-speed F80 M3 than the E9X M3 it replaces in reality? Zero. It actually looks like it is about the same or heavier if equipped with the same transmission as the weight you see below is from a DCT E92 M3:
So much for BMW's weight loss hype. This does not mean the M3/M4 will not perform well or outperform the previous generation car. The M3/M4 will outperform the E9X M3 it just is a bit disappointing this car is not turning out to be quite what BMW portrayed it as initially.