Final answer:
The minimum thickness of a rotor is also known as the rotor discard thickness. It refers to the minimum thickness at which a rotor should be replaced due to wear and tear.
Step-by-step explanation:
The minimum thickness of a rotor is also known as the rotor discard thickness. It refers to the minimum thickness at which a rotor should be replaced due to wear and tear. Once a rotor reaches its discard thickness, it is no longer considered safe for use as it may fail or cause other issues.