1.1 Opening blind rivets (N1 and N2)
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2013 BMW 135is, 2013 BMW 135i, 2013 BMW 128i, 2012 BMW 135i, and 2012 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.
Grind off blind rivet head with a belt or angle grinder. Do not grind off base material. Remove rivet remnants with a drift punch.