I recently replaced my brake pads. There is no air in the lines and the brakes are firm. They work fine around town and even at an autocross. I went driving down a wind road, braking and accelerating a lot. After braking a couple times, the brakes started fading real bad, and I had very little brakes at all. I could smell burning brakes a lot. After they cooled they were o.k. Could it be that I used cheap brakes from Checker? Can it make that much of a difference or can it be something else. I hope it is as simple as putting on better quality brake pads. All my rotors look like they are in good shape.