Every time you hit the brakes, all that energy you built up by stamping down on the throttle is converted into friction and heat and—snap—you slow down and come to a stop. This process is repeated hundreds of times without much thought, whether it’s on a run to the supermarket or a road trip. Over time the friction and heat created by the brake pads clamping down on the rotors actually wears down the metal surface of the rotor, and problems arise, possibly leading to the brake ro...


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