Well looked-after 2006 Allroad 3.0 TDI. Does anyone know what could cause a rear suspension airbag to burst (and I don't mean develop a slight leak)? I have had a saga all around the car, but the front seems to be sorted by: New pipes, new compressor, new valve block, new Bilstein struts (after the originals and the Chinese ones failed). So to the REAR ! - Original bags failed - Replace with decent quality from Germany - These failed - Replace with better quality Dunlop ones - One of these has failed - Now that Bilstein make rear ones I'm ordering one of theirs. MY QUESTION - is there anything that can cause over-pressure / pressure not switching off / imbalanced pressure etc that could cause a premature failure as it can't be a coincidence any more ? Also replacing the rear pipes and might as well do the rear level sensor. HELP?