I did that as well and my 335 was a non sport so i had to buy the wheel as well. Pm me if you have further questions.
For tracking the paddles are the way to go over letting the AT do the shifting for you.
JB4 G5 iso///
Alpina B3 GT3 Flash///
CF CSL trunk///
OEM 220 wheels///
Tri-Stiched DCT steering wheel///
M3 Front Control Arm/Tension Strut Retrofit///
3M CF Interior Trim///
Cyba Air Scoops & Exhaust Tips///