[e90-328i]

i myself wanted 313 for mine, but decided against it as thought they were too open and didnt have big brakes on mine which kinda fill the open spaces of wheel??
from my research, you want a low pressure cast or better. try to avoid gravity cast if you can (most reps are gravity) given the poor quality of roads.
but oem wheels have excellent quality, but higher price
have fun getting confused!!