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Modern disc brakes, whether metallic or ceramic, work best when heated, to a point. One reason disc rotor size has decreased is to allow brake heat to rise quickly. Most work well in the 200' Fahrenheit range and continue to work until fade occurs, usually over 400' Fahrenheit.

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Q: When are the brakes more efficient on cold brakes or hot brakes brake pads and brake discs on a road car?
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