I can say this for drum brakes. If they are in good shape and adjusted properly, they can stop a car surprisingly well. But, since I've been driving Vixen for a long time now, I can feel them fade every now and then when I make a quick stop. You can feel the braking effect just get less and less. That's the brakes over heating. They're only 9" drums, so they weren't meant for autocross. 10" brakes would be better, I'm sure, but she's gettin discs next.