Yeah, thanks for the responses. I just probably never paid attention before but there was a very loud noise at the time. I hope it's normal. I'm fully aware that the M3 makes all kinds of clunks and noises but this really stood out to me.
The noise was there again yesterday. It's definitely more noticeable at cold start but I still need your opinions on it. I have my Blackstone kit ready to go for my next oil change. I only have about 6,000km on the oil so far so I'd rather wait a little longer.
I took another video and the noise is much clearer this time (sounds very metallic). It's present all throughout the video, starts at 8 seconds and then you hear it even louder at 37 seconds but it's there the entire time.
What do you think?