Does Your Car Shakes When Braking? Causes and Solutions

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The vibrations or shakes when braking is a symptom of a fault which is not always locating on the brakes. If your car vibrates when braking, it may be that:

Car Shakes When Braking

  • It is imbalanced between tires and rims. It is less likely in the car (especially the steering wheel) would always vibrate without the need to brake. Simply by braking, the vibration that reaches the car is “amplified.”
  • Worn shock absorbers. As before, it is unlikely, since very worn dampers are difficult to produce oscillations, they simplify.. amplify them.
  • They are worn brake discs. Due to a hot spot or several intense sessions, the discs have become deformed or “warped,” causing that when braking the whole car vibrates with greater or less intensity.
  • The brake disc is damaged. Owing to the passage of kilometers, lack of grease, excessive stresses (for example a strong blow on a wheel) or simply poor assembly (both when making the car and in a possible repair) cause the bushing to be out of tolerances and Rotates eccentrically or misaligned.

Read Also: “When and Why Do I Change The Brake Discs?

As the brake disc is attached to the hub, if the hub rotates poorly, the disc also does so, so it is often difficult to know which of the elements causes vibrations.
It also sometimes happens that a damaged hub end up damaging the disks and vice versa, so often the repair is done like this:

  • Visually check the brake disc. If it is damaged, at first sight, it is replaced next to the tablets, and the problem should be solved.
  • If the disc does not appear to damage to the naked eye, it is disassembled and checked with a dial indicator if it is warped. If the warpage is low, it can rectify with the appropriate tool, but, it can replace.

One way to check that the disks of the car are folded is in a Brake tester. In this machine, gently braking our car, we can measure the braking force and oscillations when braking, with this test, we can conclude if the discs are defective.

Another solution, if the previous one is not viable and probably more expensive, is to replace the brake discs with new ones, so we should not have a problem with the new ones and, depending on the vehicle, can vary widely in price.

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