I have happily been driving my 2011 M3 hardtop convertable in many of the local track days (NASA, SpeedVentures,etc.) and wanted to sign up to participate in the 6/10 track day at the Fontana Speedway. Come to find out they don't allow convertables, hardtop or not. BBW-CCA says that until they are able to verify the safety of the hardtop convertables the ban will continue. Apparently, those in charge of making the rules at BMW-CCA have deemed the hardtop convertables unsafe. Is this a position the club has shared with BMW? Did BMW sell me an usafe car? Very frustrating. After finding out that my M3 was banned, I tried to sign up to drive my new X5. Apparently the X5 isn't welcomed on the track except in the novice group which is sold out. Just venting a bit..