Stock! No bolt-ons, not even exhaust. Here is one for example: http://www.dragtimes.com/BMW-335i-Timeslip-12168.html Really the question for me is: 1) Do they handle like dogpoop? 2) If no, what color combo to get? Monaco Blue color exterior with "lemon" interior: Sparkling Graphite (my second favorite color) I love this interior...exactly how I want my configured. But I can't get red interior with the Montego Blue because it's just too damn bright...like this: Montego Blue w/ coral interior So why do I like Montego Blue so much?