Use Performance Friction 90 compound pads all the way around. Use Ate Superblue or amber equivelent. Bed your brakes. That is get everything really hot by accellerating then mashing the brakes. When you smell burning metal you are half way there. If you follow these directions on a Stock M3 even with track tires, you will not have any braking issues. If you don't like the noise of the brakes ratling, use a sticky antisqueel spray on the back of the bads. It is cheap, easy, and will have no side effects.