Originally Posted by mstearnsy
The BMW USA site indicates it does require 18" wheels. That's what I was told when I looked into it at my parts dept. I run 18s for the summer but have 17" winters. I see that it also needs a caliper swap which I wasn't told by my parts guy, we didn't get that far in the conversation because I didn't want to run 18" winters and vetoed the idea after hearing about the rotors. They'd be awesome brakes though!
Thats my main concern is that I currently run 17" winters (which I'm considering changing in the fall)..... Just need to be certain that's what I want to do before comitting to the larger rotors...... Thanks for all the details!