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Q: Why does my brake pedal vibrate when I'm slowing down from faster speeds? - Shawn

A: Hi Shawn, 

Most commonly, this is due to rotors warping. Rotors warp when wheels or wheel hubs are not cleaned when new rotors are installed, or when the hub is bad. The rotors won't warp right away, but can take severeal hundred miles for the vibration to start. Bring your car to Tire Pros of Frederick so one of our mechanics can inspect the car to see if the rotors are in fact warped, or if the hubs are dirty or bad. Rotors can be machined if there is enough material on the rotor to do so properly without going below the minimum thickness required. If not, the rotor should be replaced. If the problem is the hub it should be cleaned properly and the rotor reinstalled.