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2018 Charger RT - Squealing/Grinding Brakes After Pad Replacement

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Mike T. · rep 0 · May 25, 4:16 AM · 1 replies · solved · Question

Vehicle: 2018 Dodge Charger RT

Hey everyone,

I recently had the front brake pads replaced on my 2018 Dodge Charger RT. Ever since then, I've been hearing a high-pitched squeal when I brake lightly, and a more concerning grinding sound under heavier braking. The shop that did the work said the rotors looked fine and didn't need replacing at the time.

I'm worried something might be wrong. Is this just normal break-in for new pads, or could it be something else? The sounds are quite loud and embarrassing. Any advice on what I should check or what might be causing this?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:16 AM

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ClearTheCode admin answer:

Squealing and grinding after a brake job can be frustrating, especially if you were told the rotors were okay. Here’s a breakdown of potential causes and what to do:

  1. Improper Pad Bedding/Break-in: New brake pads need to be properly 'bedded' to the rotors. If this wasn't done, or done incorrectly, it can cause noise. This involves a series of moderate to firm stops to transfer a layer of pad material onto the rotor surface.
  2. Warped or Uneven Rotors: Even if they looked 'fine,' rotors can have minor imperfections or become warped under heat, especially if they weren't resurfaced or replaced with new pads. This can cause grinding or pulsation.
  3. Caliper Issues: A sticky or seized caliper piston can cause uneven pad wear and constant contact, leading to grinding. Also, if the caliper guide pins aren't properly lubricated, the caliper might not float correctly.
  4. Incorrect Pad Installation: If anti-squeal shims were omitted, or if the pads were installed incorrectly (e.g., wrong type of pad, or a foreign object lodged between the pad and rotor), it could cause these noises.
  5. Lack of Lubrication: The back of the brake pads and caliper contact points should be lubricated with high-temperature brake grease to prevent vibrations that cause squealing.

When to see a shop:

  • If the grinding is severe or constant, stop driving immediately and have it towed. This could indicate metal-on-metal contact, which is dangerous.
  • If the squealing persists after a few hundred miles of normal driving (after attempting to bed the pads), or if you experience any pulsation in the pedal or steering wheel.
  • If you suspect a caliper issue, as this requires professional diagnosis and repair.

It's best to take it back to the shop that did the work and explain the persistent issue. They should re-inspect the brake system, ensuring proper installation and addressing any underlying problems.

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