It's the metal pipes on the rack that rust and then pierce

Buyers Guide:

 
Volkswagen NEW BEETLE 1998 - 2004 2.0L L4 AEG,AVH,AZG 1998
Volkswagen NEW BEETLE 1999 - 2005 1.8T L4 APH,AWV,AWP,BKF 1998
Volkswagen NEW BEETLE 1998 - 2003 TDI L4 ALH 1998
Volkswagen NEW BEETLE 2004 - 2006 TDI L4 BEW
Volkswagen NEW BEETLE CONVERTIBLE 2003 - 2005 2.0L L4 BDC,BGD,BEV
Volkswagen NEW BEETLE CONVERTIBLE 2003 - 2005 1.8T L4 AWV,BKF
Volkswagen NEW BEETLE 2006 - 2011 2.5L L5 BPR,BPS
Volkswagen GOLF 4 1999 - 2006 2.0L L4 AEG,AVH,AZG,BEV
Volkswagen GOLF CITY 2007 - 2010 2.0L L4 BEV
Volkswagen GOLF 4 1999 - 2006 1.8T L4 AWD,AWW,AWP
Volkswagen GOLF 4 1999 - 2003 TDI L4 ALH
Volkswagen GOLF 4 2004 - 2006 TDI L4 BEW
Volkswagen GOLF 4 1999 - 2006 2.8L VR6 AFP,BDF
Volkswagen JETTA 4 1999 - 2005 2.0L L4 AEG,AVH,AZG,BEV
Volkswagen JETTA CITY 2007 - 2010 2.0L L4 BEV
Volkswagen JETTA 4 1999 - 2005 1.8T L4 AWD,AWW,AWP
Volkswagen JETTA 4 1999 - 2003 TDI L4 ALH
Volkswagen JETTA 4 2004 - 2005 TDI L4 BEW
Volkswagen JETTA 4 WAGON 2006 TDI L4 BEW
Volkswagen JETTA 4 1999 - 2005 2.8L VR6 AFP,BDF