Why does my BMW M9's engine make a strange noise?

I recently noticed that my BMW M9's engine has been making a strange noise while driving. It's not a constant noise, but rather comes and goes. What could be causing this and how should I address it?

This type of noise could be a sign of various issues, such as a worn-out belt, a faulty pulley, or even a problem with the engine's valves. It's best to have a professional mechanic take a look at your car to accurately diagnose and fix the issue.

I had a similar issue with my BMW M9 and it turned out to be a faulty bearing in the engine. It's important to have this addressed as soon as possible to avoid any further damage. Take your car to a certified BMW mechanic for proper diagnosis and repairs.