Hi, I have a 2009 335i e92 and I am looking to upgrade my wheels to some BBS CH-R wheels. I am curious about what size will actually fit. I like the look of 19 inch wheels on the 335i but am concerned that there may be some rub and the ride comfort may be affected. My 335i has the M suspension and currently has run-flat tires which also seem a bit hard. I will most likely not be putting on new run-flat tires. Does anyone have any experience or thoughts?