It's BMWs fault. If it was the fault of the local council how come every other car forum on the Internet (for different manufacturers) is not filled with the same stories? It's because BMW hot a faulty batch of 225 wheels (the only ones affected) that were not cast correctly.
Current: 2014 F31 320d M-Sport, Professional Media, Visibility Pack, Reversing Camera, DAB
Previous: 2013 F10 520d M-Sport, 2011 F10 520d M-Sport, 2008 320i M-Sport Coupe, 2002 325i, 2001 318i valvetronic, 1998 318i, 1996 525i, 1990 Porsche 944S2