Is It a Problem If the Octavia's Brake Discs Rust?
2 Answers
Rust on the Octavia's brake discs is a normal phenomenon. Here are some details about brake discs: 1. Function: The brake calipers clamp the brake discs to generate braking force. When you press the brake pedal, they grip the discs to slow down or stop the vehicle. Disc brakes offer superior braking performance and are easier to maintain compared to drum brakes. 2. Solution for Rust: Rust on brake discs does not affect braking performance. Simply applying the brakes several times will wear away the rusted portions. 3. Advantages: Disc brakes have excellent heat dissipation. The thermal expansion along the thickness direction is minimal, so heat-induced dimensional changes won't increase brake pedal travel. Additionally, disc brake systems respond quickly, allowing for high-frequency braking actions, making them well-suited for ABS requirements.
Last time after I washed my car and parked it in the garage for two days, the brake discs were completely covered in rust spots, which really startled me at the time. Actually, this happens because brake discs are made of cast iron, and metal surfaces will oxidize when exposed to water or moisture, just like how your iron pan would rust if left soaking in water. Especially in rainy or humid conditions, parking overnight can lead to this. Don't worry, it's not a quality issue—just drive out and apply the brakes a few times, and the brake pads will grind the rust off cleanly. However, be cautious: if the rust layer is particularly thick and has pits, it might indicate excessive corrosion of the brake discs, in which case you should get them checked to see if they need replacement. To prevent this, avoid parking immediately after washing your car; instead, take a short drive to let the brake discs dry.
