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2019 Kia Sorento Squealing Brakes and Premature Wear

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James R. · rep 0 · May 22, 3:12 AM · 1 replies · solved · Question

Vehicle: 2019 Kia Sorento LX

I own a 2019 Kia Sorento LX, and I've been experiencing some annoying brake issues. For the past few months, the brakes have been squealing quite loudly, especially when I'm coming to a stop at lower speeds. It's embarrassing and makes the car sound old.

What's more concerning is that I had the pads and rotors replaced just last year, and it seems like they're already showing significant wear. I don't drive particularly aggressively, so I'm surprised they're wearing out so quickly. I'm worried there's an underlying problem.

Is this common for the Sorento? Could it be something other than just worn pads? Any advice on what to check or ask my mechanic?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:12 AM

0

ClearTheCode admin answer:

Squealing brakes and premature wear are common complaints, but they shouldn't be dismissed, especially if components were recently replaced. It indicates an issue beyond normal wear and tear.

  1. Brake Squeal Causes:

    • Pad Material: Some aftermarket brake pads can be noisier than OEM (Original Equipment Manufacturer) pads, especially if they are a harder compound.
    • Improper Installation: If pads or rotors weren't installed correctly, or if anti-squeal shims/lube weren't used, noise can occur.
    • Glazed Rotors/Pads: Hard braking or overheating can glaze the surface of pads and rotors, leading to noise.
    • Dust/Debris: Accumulation of brake dust or small debris can cause squealing.
    • Worn Components: While you replaced them, other components like caliper pins or hardware could be worn.

  2. Premature Wear Causes:

    • Sticking Calipers: This is a very common cause. If a brake caliper piston or slide pin is sticking, the brake pad will remain partially engaged against the rotor, causing constant friction, heat, and rapid wear, even when you're not pressing the pedal. This can also lead to reduced fuel economy.
    • Rotor Runout: If the rotors aren't perfectly flat or were improperly installed, they can cause uneven pad wear.
    • Driving Habits: While you mentioned you don't drive aggressively, frequent stop-and-go city driving naturally wears brakes faster than highway driving.
    • Brake Fluid Contamination: Less common, but contaminated brake fluid can affect caliper function.

When to See a Shop:

  • As soon as possible. Continued driving with sticking calipers or excessively worn brakes is a safety hazard and will lead to more expensive repairs.
  • Have a qualified mechanic inspect the entire brake system. Specifically ask them to check:
    • Caliper operation: Ensure pistons retract smoothly and slide pins are lubricated and move freely.
    • Rotor condition: Check for warping, scoring, or uneven wear.
    • Pad material: Confirm the type of pads used.
    • Brake fluid: Check level and condition.
  • If a caliper is sticking, it will need to be serviced or replaced. This is a critical item to address for both safety and component longevity.
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