Audi S8 Makes Noise When Braking

Common Causes of Brake Noises in Your Audi S8 and How to Address Them for Safe Driving

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Brake Pads
0%
25% chance it's the
Brake Rotors
0%
15% chance it's the
Brake Caliper
0%
20% chance it's
Something else
The most common reasons a Audi S8 makes noise when braking are bad brake pads, bad brake rotors, or bad brake caliper.
  • Brake Pads: Worn or glazed brake pads can lead to reduced braking efficiency and increased stopping distances.
  • Brake Rotors: A warped or worn brake rotor can cause vibrations during braking and reduced braking efficiency.
  • Brake Caliper: A seized or malfunctioning brake caliper can result in dragging brakes, overheating, and uneven wear on the brake pads.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

Troubleshooting Braking Noise in an Audi S8

When troubleshooting braking noise in your Audi S8, start by conducting a visual inspection of the brake components. Look for signs of wear on the brake pads and rotors, as these are common culprits for squeaking or grinding noises. If the pads appear thin or the rotors show signs of scoring or warping, it may be time for a replacement. Next, consider the type of brake pads installed; high-performance semi-metallic pads can produce noise due to their composition, especially if dust has accumulated. If the noise persists after cleaning the brakes, check for proper installation and alignment, as misalignment can lead to uneven wear and noise. Additionally, ensure that the brake fluid is at the correct level and that there are no leaks in the braking system. If you've addressed these basic issues and the noise continues, it may indicate a more serious problem, such as damaged rotors or calipers, which would require professional assessment. Always prioritize safety and consult a mechanic if you're uncertain about any step in the process.

What Could Cause Noise When Braking in an Audi S8?

When you hear noise while braking in your Audi S8, it’s crucial to identify the underlying cause to ensure safety and performance. One common issue is worn brake pads, which can create a grinding or squeaking sound as the metal backing plate makes contact with the rotor. Additionally, rust buildup on the brake rotors, particularly after the vehicle has been parked for an extended period or exposed to moisture, can lead to similar noises. Another potential culprit is the brake caliper; if it’s sticking or applying uneven pressure, it may produce unusual sounds during braking. Lastly, don’t overlook the possibility of a failing wheel bearing, which can change the sound profile when braking due to shifts in load. Addressing these noises promptly is essential, as neglecting them can lead to more severe problems. If you’re comfortable with DIY repairs, inspecting these components can help you determine the source of the noise and take appropriate action.

Why is My Audi S8 Making Noise When Braking?

When your Audi S8 begins to make noise while braking, it is crucial to address the issue without delay. Ignoring unusual brake sounds can lead to serious safety risks and potentially costly repairs. Common causes of brake noise include worn brake pads, which can create a squealing sound as the metal backing plate makes contact with the rotor. Additionally, contaminated brake pads, often due to dirt or debris, can exacerbate the problem, leading to further wear and tear. If you notice a knocking sound when braking over small bumps, this may indicate issues with the inner brake pad that require immediate attention. While some squeaking noises can be attributed to dust accumulation and may seem benign, they can signal deeper problems that, if left unchecked, could compromise your vehicle's braking system. Therefore, it is essential to monitor these warning signs closely and take action to ensure the safety and performance of your Audi S8.

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Audi S8 Brakes Making Noise