[upstate650]

As I was doing some reading, I became a bit concerned about the potential for noise from dimpled rotors. It seems pockets of air get trapped in the dimples during a braking event as the pads slide over them. Has anyone installed dimpled rotors on their X5M? Any concerns about noise from them?

The AR website indicates that the cracking concern with drilled rotors is a myth if it is done right - A quality rotor, chamfered holes and careful measuring to make sure drill holes don't hit the veins eliminates the concern. And with drilled holes the issue with noise is either significantly reduced or eliminated, as the air can escape.

Neither drilled nor dimpled rotors provide any performance benefit - they are simply cosmetic. Slotted rotors do provide better cooling, without the risk of noise. Now I am think maybe a slot/slot/drill pattern. It provides the benefit of the slots, with the looks of the drilled/dimpled, but minimizes the concern with noise/potential cracking of the rotors

Thoughts on this?