Saving weight at the highest point in your vehicle, the roof, is of utmost importance to lowering your center of gravity and improving your driving experience. There are two ways to save this weight. The easy way is to remove your sunroof and install a carbon fiber sunroof delete. If you're more committed to saving weight (and gaining style), we recommend a full carbon roof. Note that these aren't for the faint of heart, as you (or your trusty installer) will have to cut the factory roof off your beloved BMW to install the new one.
