My car has around 4000 miles and it seems to drive better every time I drive it. The engine will get stronger, not to mention the additional 3400 RPM
Also, your tires and brakes will be fully broken in. I wrote a similar review when I switched from my modded (mostly chassis, but some power upgrades) 335i. At this point, it is not even close. Plus, when you get used to the steering feel (seems better than when I bought it), that differance will fade and everything else will shine!