What are suspension airbags?
Suspension airbags—also known as air springs and air struts—are a component of some suspension systems. Like normal struts and shock absorbers, suspension airbags help support your car’s weight and absorb shocks and vibrations. But many air suspension systems provide added benefits, like the ability to adjust your ride height or the air spring damping force.
While commonly found on heavy-duty vehicles in the past, air springs are increasingly common on luxury vehicles and high-end SUVs. They are also popular upgrades for sports and race cars.
When should I replace the suspension airbags on my car?
You should consult your owner’s manual to learn whether your car’s manufacturer specifies a replacement interval for the suspension airbags. That said, there generally isn’t a fixed replacement interval. Instead, you should replace yours if they fail.
The most common signs of bad suspension airbags include the following:
The ride feels loose, spongy, or rough: If your ride feels unusually bumpy or harsh, it may be due to worn-out suspension air springs.
Uneven ride: If the airbags are faulty on one side, your car may sit unevenly.
The air compressor runs more than usual: If the air springs are leaking or otherwise damaged, the compressor may run continuously in an attempt to maintain pressure.
Uneven tire wear: If the air springs are not functioning properly, your car’s tires may lose contact with the road. This can lead to uneven tire wear, like cupping.
How often should I replace my suspension airbags?
There generally isn’t a fixed or universal replacement interval for the suspension airbag system. Some air spring manufacturers recommend replacing them every 50,000 to 70,000 miles, while others say 80,000 to 100,000. As a general rule of thumb, you should inspect the airbags at least every 50,000 miles.
If you notice signs of failure or excessive wear, you should replace them. The most common signs of faulty air springs are a spongy or bouncy ride and vehicle sagging.
Can I replace my suspension airbags myself?
A suspension airbag replacement might be a solid DIY project for experienced hobbyists and home mechanics. It’s generally a mid-to-advanced-level repair job, and novices or those without access to the proper tools will likely struggle.
If you’re confident in your abilities and have the proper tools, you probably won’t have any major issues replacing your air springs. But if you’re uncomfortable working with the air suspension system, you should contact a pro.