What is the correct method to check the suspension system's integrity?

The method to check the suspension system's integrity by moving the wheel up and down and observing the motion is effective because it directly evaluates how well the suspension system absorbs bumps and keeps the vehicle stable. By applying pressure on the wheel, you can observe how quickly the wheel returns to its original position and how well the shocks or struts dampen the motion. If the wheel bounces excessively or takes too long to settle, this may indicate issues such as worn shocks or struts that could compromise overall suspension performance and safety. This hands-on assessment directly tests the critical components of the suspension system while providing immediate, visual feedback on functionality.

Other methods, while relevant to vehicle maintenance, do not directly assess suspension integrity. Checking tire wear focuses more on the tires rather than the suspension itself. Verifying fluid levels in the shocks relates to potential leakage but does not assess the operational condition during driving. Testing brakes under pressure is important for safety but is not a method to evaluate suspension system integrity specifically.