Originally Posted by Stratus650
Guys, some parts of the exhaust might slightly expand or contract while hot/cold. It might be the case here.
I'm with this 100%...2 of my friends one who drives a 1-series and another who drives a 3-series, both experience expansion and contraction of the exhaust tips depending on how hot their cars run. I've seen it with my own eyes, and they can expand up to 0.5-1 inch!