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Driving with severely worn brake pads poses a major safety hazard. Replacement must be carried out immediately if any of the following signs appear: If a metallic friction sound (such as a "screeching" noise) is heard when the brake pedal is lightly pressed, it indicates that the brake pad wear limit indicator has directly contacted the brake disc, and continued use will damage the brake disc; When the brake pedal travel becomes longer or requires deeper pressure to achieve the original braking force, it means the friction material has been excessively worn (thickness less than 5 millimeters); If the brake warning light on the dashboard illuminates or the brake fluid level drops abnormally, both indicate that the braking system is in a critical state. It is worth noting that brake pad wear in some models can lead to uneven braking force, which manifests as the vehicle pulling to one side during emergency braking. In such cases, priority should be given to checking whether the brake caliper is leaking fluid. It is recommended to check the thickness of the brake pads every 5,000 kilometers (the standard thickness of new pads is approximately 1.5 centimeters). If the remaining thickness approaches 3 millimeters, replacement must be performed immediately; otherwise, accidents may occur due to the braking distance increasing by more than 30%. The cost of replacing front brake pads at a professional repair shop typically ranges from 300 to 800 ringgit, depending on the vehicle model and material selection.

To determine whether brake pads need replacement, a comprehensive assessment can be made from four aspects: thickness, noise, pedal feel, and dashboard alerts. New brake pads are approximately 1.5 centimeters thick. When the friction material wears down to 0.5 centimeters remaining (about 1/3 of the original thickness) or becomes level with the wear indicators on both sides, immediate replacement is required. However, inner brake pads should be professionally inspected for confirmation. If a persistent metallic "scraping" sound occurs when lightly applying the brakes, it may indicate that the wear indicator is contacting the brake rotor. The rotor should be inspected simultaneously for damage. Regarding pedal feel, if the brake pedal travel increases (requiring deeper depression to achieve the original braking force) or the pedal sits noticeably lower during emergency braking, this indicates excessive wear of the friction material. Some vehicle models display a warning indicator on the instrument panel to signal replacement intervals. If illuminated, immediate service is required. Brake pads typically last 40,000 to 60,000 kilometers. However, frequent hard braking, wet conditions, or prolonged parking may cause rust or uneven wear. It's recommended to check thickness and wear patterns every 5,000 kilometers. When replacing brake pads, use certified products installed by qualified technicians. Substandard brake pads may cause noise from hard spots or reduced braking performance, compromising driving safety.

To determine if brake pads are worn, a comprehensive assessment can be made through multiple methods. The thickness of new brake pads is usually 10-15 millimeters; if worn down to 3-5 millimeters (about one-third of the original thickness), they need to be replaced immediately. For some vehicle models, the thickness can be directly observed through the gaps in the wheel hub or the wear indicator marks can be checked. In terms of hearing, if a continuous sharp metallic sound is heard when braking, it may be a warning that the wear limit indicator is in contact with the brake disc. In terms of driving feel, longer brake pedal travel, reduced braking force, or a soft pedal are all signs of wear. On some vehicles, the brake warning light on the dashboard will illuminate to prompt replacement. It is worth noting that front brake pads usually wear faster than rear ones. Urban congestion or aggressive driving can accelerate wear, so it is recommended to check them every 30,000 kilometers. For car owners with strong hands-on ability, a caliper can be used to accurately measure the thickness. If grooves or scratches appear on the surface of the brake pads, they should also be handled in a timely manner. Regular inspection of the brake system not only ensures driving safety but also avoids higher maintenance costs caused by brake disc damage due to excessive wear. The cost of replacing a full set of brake pads usually ranges from 200 to 800 ringgit, depending on the vehicle model and material selection.

The replacement interval for brake pads should be determined based on a comprehensive assessment of driving habits, vehicle model, and actual wear conditions. Typically, front brake pads are recommended for inspection and replacement every 30,000 to 50,000 kilometers, while rear brake pads should be checked every 60,000 to 100,000 kilometers, with the exact schedule subject to the manufacturer's guidelines. New brake pads are approximately 1.5 cm thick and must be replaced when the remaining thickness falls below 0.5 cm or when the dashboard warning light illuminates (some models are equipped with wear sensors). Immediate inspection is also required if sharp abnormal noises occur during light braking, braking distance increases, or pedal travel becomes irregular. Vehicles with aggressive driving styles, frequent urban stop-and-go traffic, or regular mountain road usage experience accelerated brake pad wear and may require earlier replacement. For replacements, it is advisable to use original equipment manufacturer (OEM) or equivalent specification products, ensuring synchronous replacement of left and right wheels to maintain braking balance. Routine thickness checks can be performed through wheel rim observation (replacement is necessary when remaining thickness reaches about 5 mm), though the most accurate method involves tire removal for direct inspection to prevent misjudgment due to brake disc wear. Incorporating brake pad inspections into regular maintenance effectively prevents safety risks and extends brake system service life.

The weather does affect the service life of brake pads. A humid and rainy climate accelerates brake pad wear, as rainwater and moisture can cause rust formation on the brake disc surface, increasing friction between the pads and disc. This wear becomes particularly noticeable during frequent braking in rainy seasons. Additionally, high temperatures raise brake system temperatures. Prolonged exposure to high heat may cause brake pad material to experience thermal degradation, reducing braking efficiency and shortening service life. Regular brake pad thickness inspections are recommended, especially after extreme weather conditions. Immediate replacement is required when the remaining thickness falls below 5 millimeters or when metal-on-metal grinding noises occur. Driving habits are equally critical - avoid sudden braking and prolonged partial braking. Pre-trip inspections are advised for mountain driving or heavy loads. While electric vehicles may extend replacement intervals due to regenerative braking systems, heavier models should maintain shorter inspection intervals of every 20,000 kilometers. Selecting OEM or premium-quality brake pads, along with maintaining brake fluid moisture content below 3%, significantly enhances braking system reliability in variable weather conditions.