Coil springs are generally used on which of the following suspension systems?

Coil springs are commonly used in independent suspension systems due to their distinct functional advantages. In an independent suspension, each wheel is allowed to move independently of the others, which promotes better handling and ride comfort, especially over uneven terrain. The coil spring's design enables it to provide flexibility and adaptability to the wheel's vertical movement while maintaining load support.

Compared to other suspension types, independent suspensions with coil springs can absorb road shocks more efficiently and improve traction, as they adjust to varying surface conditions on a wheel-by-wheel basis. This unique capability makes coil springs a preferred choice for various modern vehicles that require enhanced stability and passenger comfort.

Other suspension systems, like dependent suspension (which typically uses a solid axle), leaf spring systems (commonly found in heavier vehicles for high load capacity), and air suspension systems (which utilize air-filled bags for adjustable ride height), do not benefit from coil springs in the same way, limiting their use in those contexts.