The lifespan of brake discs mainly depends on driving mileage, driving habits, and vehicle type. Front brake discs usually require inspection and replacement after 60,000 to 80,000 kilometres, while rear brake discs, which bear less force, can last up to 100,000 to 150,000 kilometres. Key replacement criteria include wear exceeding 3 mm in thickness, surface grooves or radial cracks deeper than 0.5 mm, and abnormal symptoms like vibration or increased stopping distance during braking. Vehicles used in mountainous areas, for heavy loads, or commercial operations should shorten inspection intervals by 20%-30%, with particular attention to rust in humid environments. Routine maintenance includes measuring thickness every 30,000 kilometres, avoiding prolonged braking, and always inspecting the brake discs when replacing brake pads. Actual replacement intervals should be determined through professional diagnostics to ensure braking system safety and reliability.
