Only time will tell how much quicker a 550i over a 545i in 0 to 60mph and 0 to 100mph and 1/4 mile times.


0.2 to 0.5 seconds of course will count but for now all we can do is guess!



The 545i will still kick alot of asses out there.

 

An E90 350i now we're talkin!

 

Or E90 335d!