Yeah Romeo I'm interested too and will learn more about it. The article I read said its common on the N52 engines but BMW redid something in the engine to prevent it but I guess it didn't work...I'm not sure. Mines the N54 engine but I definitely have this ticking problem...
I'm also wondering if this is harming my engine at all...idk if I need to fix it right away or what.
2008 335i - JB4 / BMS DCI / Premium Package / Sport Package / 6AT