Originally Posted by mdosu
Obviously, no one knows about the fit at this point as M5 owners are just starting to take delivery of carbon brakes now... I would call EAS, IND, Turner, or Dinan to see if a shop have attempted it, as they are most likely the first to try this.
Regarding cost, this is going to cost you around $10k including labor. Most likely you'll also have to change wheels so take into account of that cost as well.
Also, if you don't track your car, carbon brakes will be disappointing in terms of streetable performance. They have little initial bite when cold, which is not what you want from a street system. Since you live in Jersey, it won't perform well in the cold (assuming you DD your car)
IMO, if I were in a position to order a car with optional carbon brakes, I wouldn't order it, even if I did track the car. It's just much easier and cheaper to maintain a standard braking system. Don't quote me on this, but I do believe if you don't track the car, the carbon brakes are a lifetime part, you dont' need to change the pads or rotors. If you track the car, after a while you may need to replace pads and rotors....and at that point, you better wish you won the lotto...
There is a lot of mis-information in this post, but I understand that not many people are as well rehearse as I am since I have done a lot of research before putting them on my car. I assume the opinions are formed by reading various forums, articles about F1 brakes and previous generation Brembo CCM and PCCBs.
The M5/M6 ceramic is a new type of ceramic developed for BMW street use and is not suited for track. It is apparently tougher than the PCCB but are not track products like the Brembos CCM-R or the Mov'it Cer-Gen3. The advantage of the new BMW specific brakes are reduction unsprung weight, and also lifetime street use.
The current generation of carbon ceramic is both streetable and trackable. For example the Brembos on my car has 110% of friction when cold compare to their steel rotors. The Mov'it brakes performs 90% of its full capacity when cold. They performs like glue when they are hot, but they perform better than steel when cold. The brakes I have got doesn't have much difference on the street in terms of performance compare to stock brakes, but you can feel and modulate the brake much better.
Unfortunately the M5/M6 brakes is not going to fit and the OP IS better off sourcing Brembo, Stoptech or Mov'it options. IIRC the front disc on the M5 is going to be 410mm, and have a wider calliper and it will only work with 20" wheels on the M5 so it would be the same with a E90/92. Besides they are a $9000 option, which means to have them not installed in factory, plus labour is going to be a huge cost even if you can fit it on. Much higher than $10k.
You are right about the rotor cost, they would be upwards of $5k to replace, but they are rated for 5000 competition miles. There's over 50 track days before you have to replace them if you are using it for competition, and considered to be lifetime street use. In terms of pads cost, they are $200 each so that's $1600 for a full set, which is pretty much inline with any high performance track pads - except there is no compromise on the street. It is a true street and track product.
FYI - a sponsor of the forum have the Brembo for sale at around $30k with the GT callipers.