Air ride suspension, while providing a smooth and comfortable ride, can suffer from a few problems. First of all, air ride suspension systems are prone to leaks which can cause the vehicle to sit lower than normal or even sag on one side. This is usually caused by an aged system that needs to be replaced or leaking seals between components such as the compressor and valves. Additionally, if there's a problem with the leveling control valve or its wiring harness it will prevent the shocks from adjusting correctly causing them to feel too stiff or soft depending on the circumstances. Furthermore, air bags can wear out over time leading to further issues with handling and ride quality. Finally, air springs are generally more expensive than their coil-spring counterparts resulting in higher repair costs for those who choose this type of suspension system in their vehicle.