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      05-09-2009, 02:24 PM   #48
lucid
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Drives: E30 M3; Expedition
Join Date: Apr 2007
Location: USA

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Where exactly you start braking has nothing to do with how much heat you put into the system. The only thing matters is how much kinetic energy you end up losing (and converting into heat), meaning the speed at which you start braking and the speed at which you stop braking. That is the only thing that matters, the rest is not a factor. That is the basic physics. Yes, if you slow more than you need to, you will put more heat into the rotors, but that means you are putting in slow laps. And, the stock system without cooling will eventually run into trouble with RS19s if you put in many hot laps in a row. RS19s have a fairly flat friction curve, but they do have a lower MOT than race pads, and you will reach that eventually if you pound on the brakes lap after lap.
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