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Finally, there's also the issue of brake pads.
When you drive on the track, you are going to get the pads hotter than they have ever been on the road. To ensure they perform up to task consider burnishing and bedding the brakes a day or so before you head out to the track.
How to burnish and bed the brakes:
Do a series of stops that are designed to slowly heat the brake pads up to opperating temp and transfer a film of pad material to the rotors. The usual generic approach is 5 medium (pedal) pressure stops from 50mph to 20mph, followed by 5 high (80% pedal pressure) stops from 70 to 20. You will notice the brakes will start to smell, possibly smoke, and that the last 1 or 2 stops will take longer distance as the pads start to overheat and "fade." Note that this will be the pads fading (firm pedal feel) and NOT the brake fluid boiling (soft, mushy pedal) as you'll have already changed to DOT4 brake fluid before doing the brake burnishing procedure.
This is particularly important to do if you have new brake pads as there is material in the pads that first needs to be off-gassed (through high heating) before the brakes will stop the car properly. It also helps to ensure that your pads don't get glazed, which can reduce stopping ability. In addition, the pad material (whether new pads or not) is transferred to the rotors and supplies additional friction to help the car to stop better.
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