[ihvabmr]

I have a pretty legitimate concern over the durability of the Powerstop Cross Drilled and Slotted kit that was recently installed by my dealer on my E53. With the newly installed brakes, it has started to show signs of rust within 4 days after the install. The brakes were brand new, directly from Powerstop. I was fairly surprised that the rotors have started to deteriorate as I have used their rotors on other vehicles prior, which, never showed any sort of rust. I have already contacted Powerstop to see whether they would warrant the rotors. The rust spots were mainly in the front vented rotors as it started to rust between the hats, or the inner vented hats, and as well as on the back side of the drilled vents. I will keep you guys updated on what Powerstop's course of action. To be honest, after seeing the rust spots, I am pretty disappointed at the durability as they advertised to be rust resistance.