Here's picture I just grabbed off the web. Not my car but the same issue is clearly visible.
Within the circle you can see that the tips where they are closest to each other have a kink, even a flat spot, where the seam is. Wasn't like that when new.
2015 BMW M5 Sedan M-DCT w/Competition Pkg and Carbon Ceramic Brakes, Driver's Assistance, and Executive Pkgs, B&O, Alpine White / Sakhir Orange and Black Full Leather, lots of carbon fiber, and a Trunk Monkey call "Der Stig".