[sybersam141]

I just noticed today that three of the four rotors have started to form a minor grove in them. Is this something I should be concerned with now or should I just let it go? If anyone has similar experience let me know. Ive only had the car for 1.5 months, and havent driven it hard......yet. 2002 M3 Thanks,:dunno:

 

[JesseM]

I had that happen in a couple new bimmers as well. This means that the brakes are not breaking in correctly. The rotor surfaces should be smooth and even. I would go see your dealer and let them know the they're not breaking in properly. They may be able to replace the rotors.