Exploring The Pros and Cons of Air Suspension

By Daren Foertsch

Air suspension has become increasingly popular in the automotive world, providing benefits that range from improved comfort to enhanced vehicle performance. However, like any technology it has its own set of drawbacks. Air suspension replaces traditional coil or leaf springs with air-filled rubber bags that are inflated by an onboard air compressor. This allows adjustable ride height and stiffness, offering flexibility and precision in vehicle handling and comfort.

Pros

Air suspension provides a smoother ride by absorbing road imperfections more effectively than traditional coil suspension. This makes them ideal for luxury vehicles, long-haul trucks, and RVs. One of the standout features of air suspension is the ability to raise or lower the vehicle’s height. This is especially useful for:

• Clearing obstacles or rough terrain

• Lowering the vehicle for easier loading and unloading

• Improving aerodynamics and fuel efficiency at highway speeds

Air suspension can also automatically adjust to changes in load weight ensuring the vehicle remains level and stable. This is a huge advantage for trucks and SUVs that frequently carry heavy loads. By dynamically adjusting stiffness and damping, air suspension can improve cornering stability and reduce body roll making for a safer and more enjoyable driving experience. For automotive enthusiasts air suspension offers extensive customization options, from slammed aesthetics to performance-tuned setups.

Image: Airforce Suspension

Cons

Air suspension systems are more expensive to install compared to traditional suspension. This higher upfront cost can be a deterrent for some vehicle owners. The complexity of air suspension means more components can fail over time. Issues such as leaks in the air bags, compressor malfunctions, or sensor failures can lead to costly repairs. One of the most common criticisms of air suspension systems is their performance in extreme weather conditions, particularly in winter. Cold temperatures can cause:

• Air Lines Freezing: Moisture in the air lines can freeze, blocking airflow and rendering the system inoperable. Preventative measures, such as using a desiccant dryer, are essential

• Rubber Components Stiffening: Cold weather can make rubber air bags less pliable, increasing the risk of cracking or leaks

The onboard compressor works hard to maintain the system’s air pressure. Frequent use or air leaks can cause the compressor to wear out prematurely, requiring replacement. For those considering an aftermarket air suspension system, installation can be complicated and time-consuming. Professional installation is often required further increasing costs.

Image: Airforce Suspension

Tips for Preventing Winter Issues with Air Suspension

• Install a Desiccant Dryer: a desiccant dryer removes moisture from the air system, preventing ice from forming in the lines

• Use Winter-Grade Compressor Oil: Specialized oils that resist freezing can keep your compressor running smoothly in cold temperatures

• Regular Maintenance: Check for leaks, cracks, or worn components before winter begins

• Warm Garage Storage: Parking your vehicle in a heated space can help prevent freezing issues

Air suspension systems offer a host of benefits, from unparalleled comfort to improved performance and versatility. However, they come with drawbacks including higher costs and potential reliability issues in cold weather. Understanding these pros and cons will help you decide if air suspension is the right choice for your vehicle. With proper maintenance and precautions, you can enjoy the many advantages of air suspension year-round, even in winter conditions.