When inspecting a brake system, what is the difference between compliance and performance checks?

• A. Compliance checks verify actual operation; performance checks verify specs.
• B. Performance checks verify energy usage.
• C. Compliance checks verify that the system meets required specifications; performance checks verify actual operation.
• D. Both checks are identical.

Answer: (C)

The main idea is distinguishing what each type of check validates: compliance checks verify that the brake system as built and installed meets the required specifications and tolerances, while performance checks verify how the system actually behaves when operated. In practice, compliance looks at design standards, installation correctness, and measured values like specified clearances, material wear limits, and prescribed hydraulic pressures to ensure everything matches the approved specs. Performance checks then test real operation—Does applying the brakes produce the expected deceleration and pedal feel? Do the brakes respond within the required time and under load, and does the system stop the vehicle as intended? This separation ensures the system is both built to spec and capable of proper real-world braking.