* Grinding or Screeching Noise: This is the most common sound. It's a high-pitched, metallic squeal or grinding that gets louder as you brake harder. The sound is caused by the brake pads scraping against the uneven or damaged surface of the rotor. This sound is usually consistent and directly related to braking.
* Wobbling or Pulsating Brake Pedal: This isn't strictly a *sound*, but a feeling. A warped rotor will cause the brake pedal to pulse or vibrate as you brake, which is often accompanied by the grinding or screeching sound.
* Low-pitched Hum or Rumble: Especially at higher speeds, a severely warped or damaged rotor might create a low-pitched humming or rumbling sound, even when not braking. This is due to the rotor's uneven surface causing vibrations that transfer through the suspension.
Important Note: It's crucial to distinguish a bad rotor sound from other brake system issues. For example, a squealing sound could also indicate worn brake pads. If you're unsure, it's best to have a mechanic inspect your brakes immediately. Driving with severely damaged rotors is dangerous and can lead to brake failure.
