I have a 1984 318i, and the muffler tore a hole right at the exhaust
pipe. I ordered one online (a cheap one) and brought it to my
mechanic. He said that my old one (which was oval shaped) was
something that had been thrown together, and that the new one, which
was much heavier metal, was the correct one. He bought the hangers
and put it on.
A few weeks later I have a hole in the new one, same place as the
old. I can't understand why this would happen, especially since it
seems like pretty rugged material, and it seems very straight forward
to put this on.
Any ideas why this might have happened?