I want to get them so they're flush with the arch tops since they do. Not a fan of the "sucked in" wheel appearance, but at the same time, I'd rather not have anything contact the road during rapid bends. So, even if I've noticed 20 mm in the back, it's still too tight. As long as they are 15 mm or less, my insurance won't mind spacers, too. Those are, in fact, AMG IV wheels with dual six-spoke covers.