A new brake pad usually has a thickness of about 1.5cm, and the thickness will gradually become thinner with continuous friction during use. Professional technicians suggest that when the thickness of the brake pads is only about one-third of the original thickness (about 0.5cm) when observed with the naked eye, car owners should increase the frequency of self inspection and be ready to replace them at any time. Of course, due to wheel hub design reasons, some models do not have the conditions for visual inspection and require tire disassembly to complete. There is a raised mark on both sides of each brake pad, with a thickness of about 2-3 millimeters, which is also the limit for replacing the thinnest brake disc. If the thickness of the brake pad is already parallel to this mark, it must be replaced. Therefore, when the thickness of the brake pads approaches this mark, car owners need to observe and prepare at any time. However, it is difficult to accurately observe with the naked eye without dismantling the tires. Currently, many car models may indicate the position of the instrument hand brake light when the brake pads are too thin, which is more convenient for self inspection.
Small suggestion: There is no strict replacement interval for brake pads based on the driving environment and habits. Generally, replacement should be considered after driving around 60000 kilometers. When the brake pads are found to be thin through visual observation, technical personnel should be required to inspect them during maintenance, as there are inherent errors in visual observation. Professional repair stations use calipers to be more rigorous than visual observation.
