buttons by the shifter?
Hi guys. I am looking to buy a used, 2009 M3...and I'm stuck between an auto and manual transmission. Anyway...I found a pretty nice manual tranny '09, and I know M3's have three buttons next to the shift knob...the one I'm looking at is missing the middle button...what is that button for? Is it a big deal?
What are all three for? If someone has 5 min to explain, I'd greatly apprecaite it!