Well just to play devil's advocate for a second, if you aren't tracking the car, you don't need a BBK (ever have abs engage w/ stock brakes, if yes then your brakes are actually creating too much friction. It's kind of like the opposite of doing a standing burnout with 400hp and saying if you had 800hp your burnout would be better).
That said: if you aren't tracking the car, you don't need a massive fucking wing on the back of your car either. I would definitely have a BBK installed before that wing.
"The laws of physics cannot be repealed, even with DSC." - BMW Owner's Manual