Do you remember the first time you slid behind the wheel of your current vehicle? It had a particular sound; it performed in a certain way. 

As the weeks and months roll by, you may start noticing things changing. There’s a new noise. Or you have to press down on the brake pedal more for the same performance level. 

These are warning signs designed to keep you safe. If you pay attention to these changes, you can bring your car in for an inspection and locate minor issues that are easy to repair. It prevents the problems from escalating into major repairs. 

How today’s modern car brake systems work

Modern car brake systems use a combination of friction, vacuum assistance, and electronic control to slow and stop a vehicle. The most common brake system in cars today is the disc brake system.

The disc brake system consists of a rotor attached to the wheel hub, and a caliper, which houses the brake pads. When the driver presses the brake pedal, brake fluid is sent under pressure through the brake lines to the caliper. The caliper then uses pistons to press the brake pads against the rotor, creating friction and slowing the wheel.

Disc brakes are more efficient than drum brakes, commonly used in older cars. Disc brakes can dissipate heat better, which allows them to maintain their braking power even in heavy use. Additionally, disc brakes are less likely to suffer from brake fade, which is the loss of braking control due to overheating.

In addition to the friction created by the brake pads, many modern cars also feature a vacuum assist mechanism. This mechanism uses the vacuum created by the engine to provide additional force on the brake pedal, making it easier for the driver to brake.

They can also feature electronic control systems that help optimize braking performance. 

Anti-lock braking systems (ABS) use sensors to detect when a wheel is about to lock up, and modulate the brake pressure to prevent the wheel from locking.

Or they use Electronic Stability Control (ESC), which helps to improve a vehicle’s stability by detecting and reducing loss of traction. The system applies the brakes to individual wheels and can reduce engine power when the driver loses control of the vehicle.

The most common brake noises

Car brakes are an essential safety feature of any vehicle, and it is important to pay attention to any unusual noises or sensations when braking. Below are some common brake noises and what they may indicate, as well as potential solutions for each problem.

Squealing or screeching

If your brakes make a high-pitched squealing or screeching noise, it is likely that the brake pads are worn and need to be replaced. A small metal tab causes this noise, called a wear indicator, that rubs against the rotor when the pads are worn down. It is crucial to address this issue as soon as possible, as worn brake pads can reduce braking effectiveness and increase stopping distance.

Grinding

A grinding noise when braking signifies that the brake pads are worn down to the metal. The metal of the rotor is pressing into the metal of the caliper, causing damage to both components. This is a serious issue that should be addressed immediately, as driving on worn-out pads can cause expensive damage to the rotors and calipers and significantly decrease braking performance.

Clicking

A clicking noise when braking can be caused by several issues, such as worn-out brake pads, a loose brake caliper, or a problem with the brake pad guides. In most cases, this noise can be resolved by replacing worn brake pads or tightening loose components. However, if the clicking persists, it is best to have the vehicle inspected by a professional mechanic to determine the cause.

Rumbling

A rumbling noise when braking can be caused by warped rotors. This can happen if the rotors get too hot due to excessive braking or hard driving, causing the metal to warp and lose its smooth surface. Warped rotors can be resurfaced or replaced to fix the issue.

Sinking Pedal

If the brake pedal sinks to the floor when pressed, it may indicate a problem with the brake system’s vacuum booster or a leak in the brake lines. This issue can be dangerous, leading to a loss of braking power. It is important to have the vehicle inspected by a professional mechanic as soon as possible to determine the cause and find a solution.

In general, it is recommended to have your brakes regularly inspected by a professional mechanic to ensure that they are in good working condition. This will help to identify any issues before they become more serious and expensive to repair. Additionally, always pay attention to any unusual noises or sensations when braking, and have the vehicle inspected if you notice anything out of the ordinary.

Are your brakes making a funny noise?

It’s a sign you might have a problem that could put you and your passengers at risk. 

Brake noises can indicate a variety of problems, from worn brake pads to more serious issues, such as warped rotors. It is essential to pay attention to any unusual noises or sensations when braking, and to have the vehicle inspected by a professional mechanic to determine the cause and find a solution. Regular brake inspections can also help identify any issues before they become more serious and expensive to repair.

What’s that noise?

Maybe it’s a squeaking sound. Or maybe something is rattling.

You’d be surprised at the way people describe what’s happening inside their cars.

And we get it, It can be difficult to determine where a noise is coming from, and if it’s something to worry about.

Like most noises your vehicle can make, brake noises are designed to attract attention. While every system on your car is important, driving without a fully operational brake system could be dangerous at best.

But can you recognize bad noises from ones that aren’t of concern? Is that squeak trying to tell you something?

Not all brake noises are bad

Let’s clear this up before we move forward. When you get in your vehicle in the morning and drive away from your home, your brakes may occasionally have a squeak or a squeal.

Not all brake noises are bad.

The important thing here is to pay attention to when the noise occurs, where it’s coming from, and how long it lasts.

There are a few situations where brakes can cause a few noises, and that’s perfectly okay.

If it’s cold outside, it’s been snowing out, and there might be ice or snow on your brake pads or rotors, as the two connect as you first drive, they might squeak. As brake pads connect with the rotors, they start generating heat. Once the ice melts away, and the brake system heats up, the parts will resume, and function. The squeaking will disappear.

That’s not the only circumstance that can cause a sudden noise. Here in Denver, many of us head to the hills for a day of skiing. As you’re flying down the mountain on your drive home, your brakes may start to squeak. It could be from excessive heat. Are you riding the brakes as you come down in elevation? If the brake pads continually press up against the rotors, excessive heat builds. Eventually, the friction can start creating a noise. It may also lead to a temporary reduction in braking power, known as brake fade. If you notice this happening, pull over to a safe spot for five to ten minutes and give your brakes a chance to cool down. Learn to downshift as you descend in elevation, that can take the pressure off of your brakes.

Have you recently installed new brake pads? This can be especially annoying, knowing you’ve recently spent money on replacing your brakes. What is that brake noise? It may just be your brakes settling in. There are three different types of brake pads: ceramic, metallic, and organic. While you might not know which type you have before, it’s important to know that they each handle differently in unique situations. Metallic brake pads, for example, are performance-driven. They operate better in a wide range of conditions, making them preferable for some drivers. But when they’re brand new, metal can be especially noisy as they settle in. If you ever have any questions about performance, especially if they are brand new, we’re happy to check them.

Brake pads can also make noise if they’re dirty, and have dust buildup on the pads. Do you drive on dirt roads often? Do you clean your wheels equally as often? If you have any concerns about how your driving may impact the way the brakes work, give us a call.

What about other brake noises? 

We’ve covered a few of the areas where brake noise may not be of concern. But it’s important to note that if you hear your brakes, if they make noises regularly, you’re better off getting it checked than putting it off.

If a noise doesn’t go away a few miles after you start driving, it’s time to check it out.

Grinding noises – One of the most common brake noises is a grinding noise when you apply the brakes. It kind of sounds like hitting a pavement strip when you’re driving down the highway. That grinding sound is a wake-up call, telling you the brake pad is reaching the end of its lifespan. It’s where the metal at the end of the brake pad is connecting with the metal rotor. If there’s no braking material left, you won’t be able to stop effectively.

If you continue driving this way, you risk further damage. Metal on metal can only occur for so long before both sides start wearing down. And replacing brake pads and brake rotors is far more expensive than brake pads alone. Full brake jobs include replacing calipers, pads, and rotors. If you hear that grinding noise, it’s best to drive in and have them replaced as quickly as possible.

Squeaking noise – A squeaking noise can be especially annoying. It’s designed that way to keep you safe. It may or may not be a sign of a bigger problem, but it is designed to get your attention.

It could be something as easy as telling you cheap, inferior brakes were installed on your vehicle. If they aren’t making a proper connection within the system, it could be a way of telling you something is wrong. Inferior products are the number one reason for squealing brakes. If they aren’t made from high quality products, large metal flakes can pull off and drag across the rotor as the pad makes connection. These pieces will flake away, but eventually, there will be another right behind it.

If the squeal gets more intense and never seems to go away, it’s probably worn out brake pads, where a small wear indicator is hitting the rotor. This wear indicator is placed into the pad as a warning sign. It’s designed to tell you your brake pads are worn. Don’t ignore this sound for too long; it is designed to tell you it’s time to replace your brake pads, before more damage can be done.

Are your brakes making noise?

If so, don’t ignore them. The noise will grow, the problem won’t go away. And you’re putting you, your family, and everyone on the road at risk.

Before the snow starts falling and you need your brakes in all kinds of situations, pull your car into our station and we’ll get to the root of the problem.

We’ll get you back on the streets in no time.