What Causes Brake Disc Rust?

[MacEleanor]

Brake disc rust is a normal phenomenon caused by the vehicle being parked outdoors for extended periods. Below are specific guidelines for brake disc replacement: 1. Replace the brake disc after two brake pad changes: Replacing the brake disc does not necessarily require replacing the brake pads. If the brake pads still have sufficient thickness, they can be retained. Generally, the brake disc should be replaced after two brake pad changes. When the combined groove depth on both sides of the brake disc exceeds 3mm or the edges become sharp, immediate replacement is necessary. 2. Related to driving environment and habits: Brake disc replacement is heavily influenced by driving conditions and habits. Frequent braking in urban or mountainous areas leads to faster wear and shorter replacement intervals, whereas highway driving with less frequent braking naturally extends the service life.