Received a letter from Audi asking to take the car to the local stealer to check the left rear brake pipe as "in rare cases there is a possibility that it may become damaged. In extreme cases this could result in failure of one brake circuit." /ubbthreads/images/graemlins/frown.gif As they mention that it is the case for new A3 quattro, I was wondering if anyone of you guys got the same letter? Incidentally, is the left rear brake pipe the pipe that direct the fluid to compress the pads? Should I mention the letter came in beginning of April and the appointment has been set for beginning of July as they could not do earlier?