When should car brake pads be replaced due to wear?

[RyanMarie]

Car brake pads should be replaced when worn down to less than 3mm. Brake pads, also known as brake shoes or brake linings, are small in size but serve as crucial wear-prone components in the active safety system. Relevant information about brake pad replacement is as follows: Method for replacing brake pads: Remove the tire to expose the brake caliper and brake disc. Apply lubricating oil to the screws or nuts that need loosening for disassembly. Hang the brake caliper with a rope, then remove the old brake pads. Lift the hood and unscrew the cap of the brake fluid reservoir. Align and insert the new brake pads, ensuring the inner piece with the wear indicator is installed on the inside. Precautions for replacing brake pads: Verify whether the replacement brake pads are genuine parts (i.e., matching products). Check the integrity of the product packaging, the anti-counterfeiting marks, and whether the packaging labels match those on the brake pads. Also, confirm that the product model corresponds with the content on the certificate of conformity.