R40. I have them and they really don't stick out. They're on my RE28N's and I like the subtleness of style to them.
I don't have a pic of them right now. But here is another one I found:
EDIT:
Ran out to my car and snapped a pic. Don't mind the gap... Coils to come extremely soon.... as well as the wheels getting retaped and sprayed where they are chipped probably next week.
