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Originally Posted by nitrorocket
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Those rotor pics looke like nothing out of the ordinary for an x-drilled rotor that has seen a couple track sessions.
Solid rotors heat check & crack too, but they typically propagate more slowly.
As was stated in that CF thread, there is no one "magic" pad that works great on the street and track. We're talking two wildly different temperature ranges, hence why we have street compounds and race compounds. Using either for the wrong application has drawbacks. Street pads will typically cook and fade away at the track as they were meant to work best with moderate temps encountered in daily driving, and race pads on the street never get up to the intended temp level which can have many effects including reduced coefficent of friction and rapidly accelerated rotor wear.
Lots of good pads to choose from... Carbotech, Hawk, Porterfield, Ferrodo, etc. All offer both street and track compounds.