The front brake pads on my 2024 Mazda CX-50 2.5 Turbo AWD wore down to 4 mm at only 16,739 miles. The brakes had been squealing, and I recorded videos of the noise. A Mazda dealership confirmed the 4 mm pad thickness during an inspection on 10/20/2026 and recommended replacing the front pads and resurfacing the rotors. Mazda has issued Technical Service Bulletin 04-001/26, "Front Inner Brake Pad Premature Wear," for this condition on 2023-2025 CX-50s built before April 26, 2025. The bulletin says dirt and sand can...
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stick to the inner friction surface of the disc and cause the front inner pads to wear out faster than the outer pads. Mazda changed the dust cover and brake pad shape to fix it. My vehicle falls within the bulletin's range. The dealership did not perform the bulletin repair and did not record separate inner and outer pad measurements. Mazda's customer service relied on the dealership and closed my case without further review. Brake pads wearing out at this rate is a safety concern. If the inner pads wear faster than the outer pads, they can reach metal-to-metal contact before the driver notices, which reduces braking performance and damages the rotors. Many owners may not know about the bulletin or that their inner pads are wearing early, since the inner pads are hard to see without removing the wheel. There was no crash, fire, or injury. No warning lights appeared; the only symptom was brake squealing. The pads are still on the vehicle and available for inspection.