DJR's M5 0 Report post Posted November 1, 2012 I have a 2010 M5. I would like to add a wakeboard tower. Can the two options shown in the manual beginning on page 102, the arch and the tower with hardtop be added or are they factory installed only? Am I better off looking aftermarket, such as Monster Tower? Any help would be appreciated. Share this post Link to post Share on other sites