Bicycle brakes are essential. However, like other equipment, they can begin to sound uneven and noisy over time. Squeaky bike brakes exist for a variety of reasons and are rather common. However, aside from making an unpleasant noise, they reduce a rider’s braking performance. So, what makes bike brakes squeaky, and how do you fix squeaky brakes?
In this article, you will learn what causes squeaky bike brakes and how to fix squeaky bike brakes so you may ride your bike more quietly.
Squeaky brakes can happen for a variety of reasons. Some of these reasons are oil or grease on the wheel rim, a bad brake pad, a mismatch between the braking surfaces, or perhaps you have new brake pads that need to settle in.
What is a bike brake?
Most bicycle brake systems are made up of three major components:
- A braking mechanism such as brake levers or pedals allows the rider to apply the brakes.
- A signal transmission mechanism includes Bowden cables, hydraulic hoses, rods, or the bicycle chain.
- A caliper presses two or more surfaces together to convert the kinetic energy of the bike and rider into heat energy to be dissipated via friction.
State Bicycle Co. Black Label 6061
State Bicycle Co. Black Label 6061
What are the types of bike brakes?
There are three types of bike brakes: disk brakes and rim brakes.
A disc brake is a form of brake that creates friction by squeezing pairs of pads against a disc or “rotor.” This action slows the rotation of the wheel to either lower or hold its rotational speed.
Rim brakes, as the name implies, work by pressing two opposing brake pads against the rim of the bike wheel. The brake mechanisms are located on the frame near the top of the wheels.
If you’re in the market for new brakes, below are some popular fixie bike brake systems you can find online.
What causes squeaky brakes?
Here are some of the most common causes of squeaky brakes.
- Loose parts might cause some unwanted brake noise.
- Contamination of the rotor or the brake pads.
- Brake blocks are in bad condition, with glazed-over areas or uneven wear.
- An improperly adjusted brake causes vibration.
- The misalignment of the braking surfaces.
How to fix squeaky bike brakes
Follow these steps to stop your bicycle brakes from squeaking.
Place the bike on the bike stand
You must examine the bike to identify where the squeak is coming from. The best way to do this is by using a bike stand. If you don’t have a bike stand, you may always rest it against a wall or stand it upside down.
Inspect the bike
The noise of your bike brakes is also affected by different braking surfaces and brake discs. Squeaks are usually caused by grease and oil in the brake pad, rotor, or the bike’s wheel rim.
Another cause is a mismatched contact point between the braking surfaces. There’s also a good probability that worn-out brake blocks cause some noises. So take a look at those areas in particular.
Inspect the calipers and dropouts
Ensure the wheels are properly seated in the dropouts or chainstays before you begin. This can be difficult if you use a wheel with a quick-release skewer that does not thread completely into the frame.
The alignment of the caliper should be checked. To accomplish this, unscrew the caliper nuts and shake them loose. Keep your foot on the brake pedal. When you apply the brake, the caliper moves to the center of the rotor and over it.
The caliper nuts should be constrained uniformly. Next, slowly spin the wheel to see if there is any rubbing. If there is rubbing, repeat the instructions. It takes a few attempts to position the caliper successfully.
If the unpleasant rubbing persists, your bike’s brake rotor is most likely bent. But don’t worry; this issue is simple to resolve.
Straightening the rotor
All you have to do is carefully spin the bike wheel while looking through the bike caliper. This allows you to see when the brake pad makes contact with the bent area of the rotor.
Loosen the mounting bolts carefully when you apply the brakes. You can also relocate your bike’s pad or the disc brake mount to fix the issue. This takes time and a lot of patience.
Clean the bike components
Lack of cleaning is one of the causes of noisy bike brakes. So, when inspecting your bike’s rim brakes, ensure that the brake calipers, blocks, and other braking exteriors of your bike’s rim are clean and in good shape.
Scrubbing is typically sufficient. If scrubbing alone isn’t enough, the vibrations are caused by a faulty brake setup. If you observe uneven wear on the brake blocks, they’re not properly set up.
Chain lube, degreaser, bike polish, and brake fluids can readily contaminate your bike rotors and cause disc contamination. Therefore, avoid using these near disc brakes. Use an oil-free degreaser instead.
In addition to the degreaser, isopropyl alcohol is another typical substitute. Alcohol keeps the brakes in good working order, preventing noisy bicycle brakes, and dries quickly.
Use sandpaper on the disc pads and brake blocks
Scrubbing with sandpaper can help remove pollutants from this component. For example, you can remove grit from the blocks if a faulty brake produces squeaking sounds. Smooth the top layer with sandpaper to get a faultless appearance rather than a scraped one.
If you want even more tips, watch this video called “How To Fix Loud Squealing Screeching Bike Brakes” from RJ The Bike Guy’s YouTube Channel.
Frequently asked questions (FAQ)
Do you still have questions? Below are some of the most commonly asked questions about how to fix squeaky bike brakes.
Why are my bicycle disc brakes squeaking?
A squeak, scream, or pinging noise that occurs at regular intervals while riding is usually caused by a caliper alignment issue or a bent rotor that causes your brake pads to rub as you ride.
Can you use WD40 on squeaky bike brakes?
WD40 should not be used on brakes since it reduces friction where it is needed and can even break down and destroy brake components. In addition, while WD40 can temporarily lessen a brake squeal or squeak, it can also cause the brakes to fail when you need them the most.
Are new bike brakes supposed to squeak?
If you have a new bike or fresh pads and rotors, it is natural for them to squeak. However, it takes some time for the pads to “set in” and start working.
As you can see, fixing squeaky bike brakes is not that hard. Use these steps, and you will return to pedaling in no time!
This article covered what causes squeaky bike brakes and how to fix squeaky bike brakes so you may ride your bike more quietly. Here are some key takeaways:
- A bicycle brake either slows or stops a bicycle from moving.
- Loose parts might cause unwanted brake noise.
- The noise of your bike brakes is also affected by different braking surfaces and brake discs.
So did we cover everything you wanted to know? Let us know in the comments section below (we read and reply to every comment). If you found this article helpful, check out our full blog for more tips and tricks on maintaining a fixed-gear bike. Thanks for reading, and stay fixed.