Originally Posted by Robin Hood
Stock M brakes are 1 piece of sh1t on a track(been there done that,ex E46 M3/ ex E90 M3 on Assen Moto GP track)
After 3 laps they were already fading and almost on fire.
For street use OK, but on a trackday : SUPERCRAP!
What brake pads and brake fluid were you using when you experienced fade?
When was the last time you did a complete brake system flush?
Was the brake pedal mushy and/or did it go all the way down to the floor or was the pedal hard but the vehicle would just not stop?
There is simply not enough detailed information in your post for readers to make a fair evaluation on your particular circumstance.