Today I removed the remains of the Klarius exhaust I fitted to my diesel tourer only three years ago
The first two fell off within 3 months each due to the hangers being welded to the outer skin only - fractured around the welds and detached, both returned for warranty.
This system managed not to fall off, but corroded excessively and given it was fitted to a diesel I would have expected it to last much longer (the original system lasted 16 years before it died).
I fitted a nice new Longlife stainless system which will hopefully last as least as long as the original.