How can you know that the brake pads are worn out and needs to be replaced?

1. Correct answer: There is a mark on the brake pad that indicates that it is worn out.
2. Only after being checked at a licensing facility.
3. According to the cooling rate of the brakes after a strong braking.
4. You cannot know until the padding completely disappears.

WhyBrake pads have a wear mark. It shows when they need to be replaced.