Originally Posted by erm324
Awesome, thanks for the feedback. The issue seems to manifest itself after I give the car a good beating. It never happens when the car is cold - seems only when the oil gets heated up and thins out.
really sounds like speculation at best. If you're that worried I would've never SC the car.
But def keep in mind that all M cars make a lot of valvetrain noise.
My e46 m3 used to sound like a sewing machine, and my e90 isn't too quiet either; you need to learn to discern the differences in sounds (i.e. valvetrain noise or something bad).
Just enjoy the car!