Slotted Rotors
 

I recently installed some slotted ATE rotors in the front of the X. They work fine, but when you jam on the brakes for a suden stop, they make a noise. Not a screech typically associated with brakes but more of a deep rotating sound. I am not sure if this is a characteristic of slotted rotors, something is wrong with my handywork, or maybe I installed the slots backwards.

Anyone have any experience with this?

Normal. That's the slots rubbing across the pads.

Did you go through the proper pad bedding procedure after installing the rotors?

:iagree: It is important that you 'bed' the brakes and rotors - there is a description how to do this on this website in the articles section.