Originally Posted by T.Dot_E30
No such thing for a 330ci.
The e46 m3's with competition packages did however have this option (which i'm assuming your talking about since that is what you drive). The competition package got cross drilled rotors that are 20mm bigger than the standard m3 rotors and they are also a floating rotor with an aluminum hat.
There is such a thing because I also own a 2005 330Ci and when I did my front brakes I considered buying the BMW Performance cross drilled rotors instead of factory rotors. I decided not to strictly because I ran a 17" winter wheel setup. They are an aftermarket accessory through BMW parts depts as part of the BMW Performance tuning lineup.