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Modern disc brakes are designed to completely remove the pad from the rotor.
So there will be no parasitic drag there.
If you have a car less than 15 years old with dragging rotors, you have a problem that needs to be addressed.
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When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
Albert Einstein
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