Why does my car shimmy when braking?

Answer by  eatwrite (1559)

You are braking too fast and hard. Your alignment can be off. If it pulls to the right, you need new brakes.

Answer by  Nosob (12)

You have a problem that is most likely with your rotors and they need to be turned or replaced. This could also be from worn or out-of-adjustment calipers, which should be checked out as well. Moreover, you need to get this looked by a professional, as this is not a problem that should be driven with or let slide.