The brakes on the M3 are pretty good, but when you put the car on the track, they tend to heat up and fade quite rapidly. This can be fixed with some simple upgrades. Here is the route I chose to take in preparing my car.

EVO Front Rotors

My front rotors were past wear specs so they needed replacing. The Evolution rotor has superceded the original BMW front rotor. Not much is gained from slotted/drilled rotors. Stock is the way to go, or at least good OEM replacements. I paid about $70 per rotor.

Rear Rotors

The current rotors were right at wear specs so off they went, and new ones went on. I used Original BMW replacement rotors. About $35 each.

Performance Friction PF90C Brake Pads

These pads are supposed to be the best all around race pad as far as wear, rotor friendliness, stopping power, etc. They are not cheap but are worth it. Look to spend about $310 for fronts and rears.

Front and Rear Caliper Rebuild

My calipers had 140k miles on them so I figured it was time for a rebuild. I bought OEM BMW Caliper rebuild kits for the front and rear. Total came to about $35. See the tech tips section for an article on how to rebuild your calipers.

Fischer Stainless Steel Brake Lines

One of the nicest stainless brake lines you can buy. Not cheap, but beautifully made. Installation is pretty easy, but messy. See the tech tips section for an article on it.

Barry Battle Stainless Steel Backing Plates

These replace the stock backing plates and allow you to feed air right to the center of the rotor for maximum cooling. An absolute must for a track car. Barry did an excellent job on these. The big plus is you dont have to remove your hubs to install them.

Pegasus Brake Ducts

The installation of these is pretty easy. Take the front bumper off by removing the two nuts that hold it on. Once off, you can remove the old fog lights. Then use the old fog light brackets to mount the brake ducts. They mount up real nice and cost about $40 bucks.

Heavy Duty Brake Ducting Hose

I got my hose from Barry Battle. The stuff is not cheap. Something like $5-6 a foot. You get what you pay for, buy cheap hose and you have to replace it alot sooner.

ATE Super Blue Brake Fluid

To finish it all up, you gotta put some good brake fluid in the system. Something with a high wet boiling point. Fill it up and bleed/flush the system with Steve D's brake bleeder.

Here are the parts I used. All can be purchased for around $1100.