What is checked regarding the vehicle's suspension system during the inspection?

During the inspection of a vehicle's suspension system, the focus is primarily on the alignment and condition of all suspension components. This involves examining parts such as springs, shock absorbers, control arms, struts, and bushings for signs of wear, damage, or improper alignment. Proper alignment is crucial for the vehicle's handling, tire wear, and overall safety. Inspectors look for issues like excessive play in the joints, leaking fluid from shock absorbers, or any components that may be cracked or broken. Ensuring that all components are in good condition and correctly aligned is essential for maintaining the vehicle's stability and comfort while driving.

Other options, while they touch upon aspects related to the suspension, do not encompass the full scope of what is assessed during a safety inspection. Suspension stiffness and sway bar length are specific measurements or characteristics that may be relevant in certain contexts, but they do not broadly reflect the comprehensive inspection that includes evaluating all components for functionality and safety. Wheelbase measurement is related to vehicle stability and design but is not a direct assessment of the suspension system itself. Thus, the correct answer emphasizes the holistic evaluation of the suspension components for optimal performance and safety.