Why Do Brakes Squeak When Wet?
Brakes squeak when wet primarily because a micro-thin layer of flash rust forms on cast iron brake rotors within 15 to 30 minutes of moisture exposure. When the brake pads contact this oxidized layer, the fluctuating coefficient of friction triggers rapid “stick-slip” high-frequency vibrations between 1,000 Hz and 5,000 Hz, producing an audible squeak. At […]