93 525I, For a while Ive had issues with vibration and pulsation when I was braking and it seems to be getting worse. So I'm looking for ideas on what to buy there are rotors that are slotted, drilled and slotted or just drilled and Ive also heard about the drilled rotors cracking, I guess my goul is to dissipate as much heat as possile can someone give me a heads up?Also a small note the thrust pushings are in good shape. THANK YOU!