BMW Repair: E 46 BMW PERFORMANCE ROTORS, 2004 bmw 325ci, bmw 325ci

Question
GOOD MORNING SIR, I HAVE A 2004 BMW 325CI SPORT COUPE AND I AM ABOUT TO REPLACE THE STOCK BRAKE ROTORS WITH BREMBRO PERFORMANCE SLOTTED ROTORS, I WAS WONDERING IF THERE ARE ANY OTHER MODIFICATIONS NECESSARY FOR THIS APPLICATION TO BE CORRECT, FOR EXAMPLE DO I HAVE TO REPLACE ALL FOUR BRAKE DISCS OR CAN I JUST REPLACE THE FRONT SET?AND DO I HAVE TO USE PERFORMANCE PADS AND OR PERFORMANCE CALIPERS AS WELL OR WILL THE STOCK PARTS BE SUFFICIENT?I APPRECIATE YOUR ASSISTANCE CONCERNING THIS MATTER AND I HOPE TO HEAR FROM YOU SOON,HAVE A GOOD DAY!  

Answer
I think you should ask a sales rep for their recommendations.  The possibilities are endless depending on how much you want to spend.
Replacing the rotors by front rotors by themselves should be fine.
As to pads, the high performance pads work great when hot but you loose some  breaking power under normal driving.Be careful.