How Do You Know When Your Brake Discs Need Changing?

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As part of your vehicle’s braking system your Brake Discs or Brake Rotors are known for their vital role in the safe stopping of your vehicle.

As the name of them suggests the are a disc like metal object that is attached to the hub of each wheel and spins around like a rotor when the vehicle is moving.

Once the driver applies pressure to the brake pedal, the braking system works by the brake pads clamping down on the Brake Disc to cause friction and slow your vehicle down. They work in pairs ensuring the left and rear work in sync with one another.

Why It Is Important You Change Them?

Ensuring your brake discs are fully functional and in top condition at all times is a requirement, not only for your safety, but also the safety of others.

Poorly maintained brakes not only affects stopping time but also stopping distance, which could result in an accident or even worse.

How Often Should You Change Them?

The time frame for changing Brake Discs really does vary. We recommend checking them on a regular interval and always refer back to your Owners Manual Handbook which will give recommended time periods or mileage stamps when they should be replaced.

However please note this is only a recommendation, and you should check your Brake Discs regularly as drivers braking styles may differ along with past replacement discs as some wear quicker than others depending on material.

What Are The Signs They Need Changing Whilst Driving?

Whilst we recommend keeping an eye on them from a visual perspective, there are a number of signs that you will notice:

1 – In most modern cars the on-board computer will highlight when they are running low. However do not rely on this as all it takes is for it not to work.

2 – Vibrations may occur when you brake which is a key indicator that your brake discs are warped. This means that they are not 100% smooth.

3 – The brake pedal will have additional travel when pushing down on it. This is a key indicator that your brake pads or discs are worn.

4 – The stopping distance has increased substantially meaning that it takes longer to stop than it should.

5 – If your vehicle pulls to one side this could be due to uneven wear on the brake discs, pads or in some cases the Brake Calipers sticking which causes this to occur.

6 – You may also feel the pedal is softer when you push it down? This combined with the longer push we mentioned earlier could be caused by the brake fluid being contaminated.

7 – Another tell comes from your Brake Pads which are often fitted with a wear indicator or brake pad wear sensor. When the brake pad is down to a set level the wear indicate will rub against your brake disc causing a noise almost like a grinding noise. This is to highlight your brake pads need changing. When this is the case it is a good time to get the Brake Discs checked as well.

How Can You Check The Condition Of Your Brake Discs?

We always recommend doing this when the car has been sat for a while as doing it after a long journey could result in hot brake discs and other components which could injure yourself.

Whilst the vehicle is stationary, take a look at the Brake Disc itself, which should be smooth and offer a shiny surface.

If the brake disc itself has ridges, rough patches or visible grooves this highlights that the brake disc is past its minimum thickness levels and requires a replacement.

Always remember to replace in pairs.

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Where Can I Buy Replacement Brake Discs?

Whilst you can purchase Brake Discs from any motor factor or online car parts store, we highly recommend using our own Car Par Price Comparison tool, to not only help you find the correct ones for your vehicle but also find the best prices online to buy today.

You can learn more here…


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