What are the Common Causes of Brake Failure?

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Brake system checking is a crucial part of car maintenance. After all, this component plays an essential role in ensuring your safety whenever you drive. So, besides learning the common causes of brake failure and engine failure, you should also know what can trigger your brakes to malfunction. It is worth noting that even properly cared for brakes can lose their performance ability. When ignored, brake fade can eventually lead to failure.


So, as per this article, we are going to discuss the most common causes of brake failure. This way, you will be able to catch the early signs and prevent them from getting worse.

The Design of the Discs or Drums

The heat generated by braking must be dispelled quickly. When disc brakes have an open design, it becomes less likely to overheat. It is only natural for the brake discs to be at the front, generating most of the braking action. Meanwhile, the cheaper drum brakes will be on the rear, provide the brake function when you park. On the other hand, when you’re looking at larger or high-performance cars, you will observe that all four corners have disc brakes.

Insufficient Air Pressure

If the pedals of Brake goes all the way to the floor when you press it, it is likely that there is something wrong with the air pressure. When you press the foot brake, the air used must build up quickly. Keep in mind this when the pressure drops too low, you should pull over to safety and avoid attempting to drive the vehicle. No matter the speed a car is traveling, such a situation will put your life at risk.


In most cases, brake failure is caused by corrosion in various parts of the brake system. Here are some pointers to remember:

  1. Ideally, cast iron is a suitable material for brake parts. However, it can rust quickly.
  2. The action of the disc pads can rapidly clean off the surface rust on the front. However, this may not be the case on the rear drum brakes, especially on small, light vehicles or cars that are not used on a daily basis.
  3. The rear drum brakes of the vehicle do not typically experience corrosion issues.
  4. Heavy braking can clean off initial, light corrosion. However, if ignored, this light rusting can get worse and cause surface pitting.
  5. Before, pitting is one of the causes of MOT test failure. These days, the only reason for discs fail the test is when they’ve become ‘seriously weakened’.

Daily Wear and Tear

  1. In time, the front discs start to wear out and they end up becoming too thin.
  2. It will worth noting when manufacturers specify the indications that tell you when you need to replace the discs. It is advisable to change them in pairs.
  3. At the same time, you must replace the brake pads.


  1. The disc’s shape can change because of uneven cooling and heating.
  2. When you feel shakiness coming from the pedal, it means that your discs twist out of shape.
  3. Keep in mind that worn out or thinner discs are more susceptible to warming.
  4. Ideally, you should keep yourself from holding the vehicle back when you are going on long downhill stretches. Otherwise, you will subject the discs under tremendous heat. Instead, you should use engine braking and place your car to a lower gear.

Water in the Brake Fluid

Water starts to vaporize as the brake fluid reaches a high temperature. That said, the steam will be compressed, preventing the braking motion from being transmitted to the wheels of the car. Consequently, the vehicle will not be able to brake properly. These all above mentioned are the common causes of brake failure

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