Originally Posted by EnjoixE92
im lost with the thingy opening and closing. im in the market for an 09 bmw m5 but im thinking about switching to the new F10 550. whats the 0-60 on it?
It's to change the tone of the exhaust. The driver can open or close the vent and have a stock sounding car or an aggressive sound depending on his mood.
See here for all official F10 specs, including acceleration times: