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Persistent Brake Squeal and Mild Vibration on my 2018 Q50 3.0t

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Mike T. · rep 0 · May 25, 3:48 AM · 1 replies · solved · Question

Vehicle: 2018 Infiniti Q50 3.0t LUXE

Hey everyone,

I've been noticing a persistent squealing noise from my brakes lately, especially at lower speeds or when coming to a complete stop. It's a 2018 Infiniti Q50 3.0t LUXE with about 55,000 miles on it.

Alongside the squeal, I'm also feeling a slight vibration through the pedal when I apply the brakes, not super intense, but definitely noticeable. It's been happening for a couple of weeks now and seems to be getting a bit worse.

I'm wondering if this is just normal wear and tear, or if it could be something more serious. Any thoughts or similar experiences out there?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 3:48 AM

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ClearTheCode admin answer:

It sounds like you're experiencing common symptoms of brake wear, but it's important to address them promptly to ensure safety and prevent further damage. Here's a breakdown:

  1. Causes of Squealing:

    • Worn Brake Pads: Most brake pads have a small metal indicator that squeals when the pads are worn down to a certain level, signaling it's time for replacement.
    • Glazed Rotors/Pads: If the brake components get overheated, the surface can become hardened or 'glazed,' leading to squealing.
    • Contamination: Dirt, dust, or moisture on the pads or rotors can also cause noise.
    • Improper Installation: If pads or shims weren't installed correctly during the last brake service, they might squeal.

  2. Causes of Vibration (Pulsation):

    • Warped Rotors: This is the most common cause. When rotors overheat, they can develop uneven surfaces, causing the pedal to pulsate as the pads contact these high and low spots.
    • Uneven Pad Wear: If brake pads wear unevenly, it can also contribute to vibration.
    • Loose Caliper or Wheel Bearings: Less common, but a loose caliper or worn wheel bearing could also manifest as vibration during braking.

  3. Troubleshooting Steps You Can Take:

    • Visually inspect your brake pads and rotors if you're comfortable. Look for significant scoring on the rotors or very thin pads.
    • Note if the squealing changes with light versus heavy braking.

  4. When to See a Shop:

    • Immediately: Given you have both squealing and vibration, it's highly recommended to have your Infiniti Q50 inspected by a professional mechanic as soon as possible. Warped rotors can reduce braking efficiency, and severely worn pads can lead to metal-on-metal contact, which is dangerous and will cause much more expensive damage.
    • A shop will be able to accurately diagnose if you need new pads, rotors (or rotor resurfacing), or if there's an issue with your calipers or other components.
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