
S90 brake pads are generally replaced every 40,000 to 60,000 kilometers, but the specific replacement interval depends on actual usage conditions. Below is relevant information about brake pads: 1. Brake pad classification: Asbestos brake pads (mostly phased out), semi-metallic brake pads, low-metallic brake pads, NAO formula brake pads, ceramic brake pads, and NAO ceramic brake pads. 2. Ceramic brake pads vs. traditional brake pads: In traditional brake pads, metal is the primary friction material, providing strong braking force but with higher wear and a tendency for noise. After installing ceramic brake pads, no abnormal screeching (i.e., scraping sounds) occurs during normal driving. Since ceramic brake pads contain no metal components, they avoid the metal-on-metal screeching noise between traditional metal brake pads and their counterparts (i.e., brake pads and rotors). 3. Stable friction coefficient: Ordinary brake pads often use immature friction materials, where excessively high friction coefficients can lead to unsafe factors such as loss of directional control during braking, pad burning, or rotor scoring. Even when brake rotor temperatures reach as high as 650 degrees Celsius, ceramic brake pads maintain a friction coefficient between 0.45-0.55, ensuring excellent braking performance for the vehicle.


