Originally Posted by KAIXIN
It is front 40 : rear 60, please see attached link
It looks the x-drive edition for M135i is quite interesting as well. I am wondering for RWD, what kind of additional fun do we get in the daily driving experience - tail can dance in the rainy days? And in track, how does it compare to AWD?
Basically you get more traction and stability with AWD. RWD gives you a more tail happy car, and less traction interference in the steering. The added weight and drivetrain loss of the AWD system will take away a little bit of performance.