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Q: what does it mean on 2004 Chevrolet Impala

what does it mean when your car shakes when you hit the brakes
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Actually machining rotors makes them more prone to warping. Because every time they are machined it makes them thinner reducing their ability to dissipate heat. In the shop I used to work at we routinely replaced rotors instead of machining, and we had very few come backs and/or disappointed customers.
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