How would you measure the wear on brake disks?

To measure the wear on brake disks, you can use a micrometer or caliper to measure the thickness of the disk at various points, comparing these measurements to the manufacturer's specifications. Additionally, visual inspections can help identify any grooves, cracks, or uneven wear patterns. Regularly monitoring the brake performance, such as increased stopping distances or vibrations, can also indicate wear and necessitate further inspection. If the thickness falls below the minimum recommended level, the disks should be replaced.