Numerous urban legends exist surrounding brake squeal. However, it is out of the ordinary and has nothing to do with how effective the brakes are.
Harmonics at the metal-to-metal contact sites on the brake caliper are the main source of brake screeching. Examples comprise:
- where the brake pad’s back contacts the caliper pistons
- Whenever the pads, the caliper, or the contact points for the retaining pins and spring clips
- A floating caliper’s slide
- where the caliper is attached to the carrier or spindle
Removing the caliper and pads will allow you to wipe any rust from the metal-to-metal contact points, apply a small layer of high temperature anti-seize to every metal-to-metal contact point, and then reassemble.
The best comparison I’ve heard is to imagine disc brakes as a violin, with the caliper representing the string and the rotor being the bow. If the metal-to-metal contact areas are dry and/or rusted and the caliper is tight as a result, the caliper will easily squeak when the rotor strokes it. In contrast, if the metal-to-metal contact points of the caliper are loose due to polishing and lubrication, then stroking the caliper with the rotating rotor will not produce the vibrations required for squealing. This is analogous to how a slack violin string will not resonate and sing when a bow is drawn across it.
Finding a mechanic who is aware of these subtleties and prepared to put in the necessary time is the hardest obstacle. Find a reputable independent Porsche shop if your dealership is unable to resolve the issue.
You might not get a response because this is an old thread, and you might be restarting an old thread. Consider starting a new thread, please.
In This Article...
How can I stop my brakes from grumbling?
Brake squeaking can be fixed using a variety of techniques, from straightforward fixes to complete replacement.
You may just need to oil the contact points if your brakes were just installed or if your car is brand new. You must first take the brake pads off of the caliper. After that, lubricate the caliper carrier’s numerous contract points and the backs of the pads. Keep in mind that getting grease on the surface of the rotors or the pads could impair their performance.
Brake pads may occasionally rattle if they are not firmly fastened. Installing a set of shims will help to reduce vibrations, which should stop any squealing noise. Shims often employ a layer of rubber to dampen vibrations and ensure that brake pads are tightly connected to the brake calipers. A
The squeaking may have started since you made the decision to use cheap brake pads the previous time. For improved braking performance and reduced noise, a mechanic might advise using more expensive, higher-quality metallic pads. A
It’s usually time to have your brake pads and rotors replaced after they have endured many miles of regular use and won’t quit squeaking. When you try to stop at that point, you might hear a harsh metal-on-metal grinding sound. A
It may be simpler to determine if brake pads or rotors need to be replaced than other potential causes, making a visit to a repair shop an easy choice. A brake work is necessary if the stopping capacity of the brake pads is less than three-eighths of an inch, or if the rotors have noticeable grooves or raised lips.
Does the brake squeal stop?
The first thing that typically comes to mind when you hear a squeaking or screaming noise emanating from your brakes is typically worn brake pads. But one of numerous issues with your brake system could be the source of that annoyingly high-pitched noise. A new set of pads that haven’t yet gotten acclimated to the rotors or a little corrosion on your rotors from a night of rain are two examples of temporary causes. Other times, it can be a more serious problem, like a caliper mechanical problem (which holds your brake pads against the rotor to bring your car to a stop). If the squeal stops after using the brakes a few times, there is usually no issue. However, if the noise continues or, worse yet, if you start to lose braking force, it’s time to have a repair examine your brakes.
Read on to learn what might be wrong with your brake system if you’re not sure what’s making your brakes screech.
Why do my brakes screech while I’m moving slowly?
The screeching sound is brought on by high-frequency vibration of the brake pads against the rotating disc, as stated in some owner’s manuals. The friction created by the pads as the caliper clamps them against the rotating disc causes vibration, which cannot be avoided.
Squeaking brakes made of ceramic by Porsche?
To lessen these vibrations, some steps have been put in place. Weighted dampers on the pads themselves are among them. While some scream frequencies can be eliminated by these procedures, it is not practicable or desirable to eliminate all frequencies. Unfortunately, Porsche brakes screech frequently under various circumstances.
Naturally, the problem appears to be exacerbated in vehicles using Porsche Carbon Ceramic Brakes. Compared to their steel equivalents, these systems are built to withstand higher operating temperatures. PCCB systems have a tendency to squeak at lower temperatures as a result of this and their superior heat-shedding properties.
The drawbacks of brake pads made for high operating temperatures are well known to those of us who have utilized high performance brake pads. In the past, when I drove my Volkswagen Golf with track pads installed, it sounded like a school bus coming to a halt. Given that Porsche demands that their brake pads perform well on both the road and the racetrack, some squeal is expected. The propensity to shriek should decline as temperatures rise.
While many of these things might be obvious to Porsche owners and car fans with more experience, this isn’t always the case. Remind them that brake squeal in a Porsche may be a feature rather than a bug and direct them to our site to explain why if you hear someone complaining about it.
Why scream ceramic brakes?
Many cars frequently have ceramic brakes that screech. The back of the brake pad vibrates against the caliper assembly, which is why ceramic brakes screech. Squealing is brought on by this vibration.
Why are my front disc brakes making noise?
It’s likely a misaligned caliper or a bent rotor that is causing your brake pads to rub while you ride if you hear a squeak, scream, or pinging noise when you are riding on a frequent basis. Lifting your wheel off the ground and giving it a spin will help you determine if this is the issue. You have a brake rub issue if the wheel does not spin freely and stops!
Why are my brand-new brakes squealing?
As already indicated, new pads are frequently abrasive and occasionally coated with noise-generating protective materials. That brake pad squeak will disappear after some wear, often known as a “bedding procedure.”
It is preferable to talk to a licensed brake mechanic about your problem if the noise persists after a reasonable amount of time.
Hearing squeaky sounds following a pad replacement can be alarming for the typical motorist. However, aside from minor annoyance, vehicle brake systems are typically stable following a refit (and assuming that a professional brake mechanic performed the work).
How can I stop the squeaking of my ceramic brakes?
- Front wheel removed.
- The calipers should be free of the pads.
- Brake pads should be greased in the calipers.
- Reassembly.
- Make sure to fully tap in the drift pins as you insert them from the back of the caliper.
- Reattach the wear sensor for the pad.
- Regain control of the wheel.
How durable are Porsche brakes?
How long do the brake pads for Porsche last? Depending on your driving habits, Porsche brake pads typically last between 30,000 and 70,000 kilometers. You’ll need to have an examination more frequently if you commute in heavy traffic and use your brakes frequently.
What is the price of Porsche brakes?
Expect to pay between $2,500 and $3,000 at a Porsche dealership or between $1,800 and $2,500 at a Porsche independent repair to replace the front and rear brakes. But if you’re handy, you can replace your brakes for less than $1,000 by yourself.
When ought a Porsche’s brakes to be changed?
Depending on the aforementioned variables, Porsche rotors need to be replaced every 30,000 to 80,000 miles. For more information, consult your Porsche maintenance manual.
I have nice brake pads, so why do my brakes squeak?
As previously indicated, dampness or metallic or ceramic pads can make pads squeal. According to Popular Mechanics, this kind of squeaking is typically unharmful. Bockman’s Auto Care adds that a foreign object can also cause new brake pads to squeal. Rocks, pinecones, or twigs could become wedged between the brake pad and the rotor.
Does WD 40 work to stop brake squeaks?
To put it mildly, squeaky or screaming brakes can be bothersome. It makes reasonable that WD40 would work to fix this brake problem since it is well known that it is a lubricant that can eliminate these noises from door hinges. I can offer you a definitive response because I worked at a repair business where we dealt with a variety of problems.
Your brakes shouldn’t be treated with WD40 since it can break down brake parts and reduce friction where it is needed. Spraying WD40 on the brakes may temporarily stop them from squeaking or squealing, but it could also make them malfunction when you need them most.
You might want to try brake shims, such as these ones from Amazon, to lessen the noise your brakes make.
Let’s go over the reasons in more depth why you shouldn’t spray WD40 on your brakes. I’ll also let you know where to look for advice on how to handle squeaks.
How soon do brand-new brakes stop making noise?
1. New brake components New brake pads or rotors frequently squeak in the first few days before they are fully broken in. You should have a professional inspect your brakes if the squeaking hasn’t ceased after more than a few days.
Why are my brakes making a loud noise?
It is time to replace the pads when the friction substance on them wears out. A tiny spring steel clip-style wear indicator is included with some pads. This clip makes contact with the rotor and emits a high-pitched screech when a pad is worn, signaling that it is time to service the brakes.
Where do you quietly spray disc brakes?
Brakleen(r) Brake Parts Cleaner should be used after removing the brake pads. Spray each outboard and inboard pad’s steel back evenly after thoroughly shaking the container. Applying to the lining, the rotors, the side of the pad that contacts the rotors, or any moving parts is prohibited. After allowing to sit for ten minutes, reinstall the brakes.
How many miles are the brakes on a Porsche ceramic?
Compared to standard iron rotors, ceramic composite brake discs are strong and extremely resistant to wear.
Unlike carbon ceramic rotors, which can last over 100,000 miles or even outlive your car, typical cast iron discs or iron rotors may only last up to 60,000 miles.
How long a carbon ceramic disc will survive, however, is not something that can be determined with absolute certainty. For instance, if you have a history of aggressive driving, your carbon ceramic brake disc may not last as long.
How much does it cost to repair brakes that squeak?
Bring your automobile to a reliable mechanic for an inspection. A straightforward examination should cost between $88 and $111, depending on local labor rates, claims RepairPal. Depending on the model, replacing a set of brake pads might cost up to $300 in components and labor for each axle. Rotor replacement costs $300 to $400. Calipers cost between $600 and $900. Replacement brake shoes typically cost between $250 and $300. Costs for replacing a drum range from $200 to $230.
It is beneficial to have a specialist examine your car’s braking system at least once a year. Brake pads will likely need to be changed frequently. Your brakes might deteriorate more quickly if you drive swiftly or on mountainous terrain. By avoiding abrupt braking and coasting to slow the car whenever possible, you can help the system last longer.