What is a Coil Spring?
Coil springs are a key part of your car’s suspension system. Now, you may be a little iffy on what exactly a suspension system is, but trust me when I say that it’s pretty darn important.
Most cars have a coil spring for each wheel. We could sit here for a while as you do the math, so let me just do it for you: That means there are four coil springs on your car, got it? The coil springs are exactly what the name suggests: standard coiled springs. They’re usually placed between the upper control arm and lower control arm, and essentially serve to absorb shock. Simple enough.
As your car drives, you might notice that it’s subject to a lot of imperfections in the road. There are pot holes, bumps, and everything in between. Yet the ride is usually pretty smooth, in large part because the coil springs absorb much of those imperfections, rather than letting them transfer to the frame of the car, and, eventually your butt. The coil springs are what allow the suspension to move up and down, rather than forcing the entire car to.
Coil springs are also responsible for supporting the weight of your car, which, it may shock you to learn, is kind of important! So, if you like having your car sitting at the right height, you can thank your coil springs.
Thankfully, coil springs are extremely durable. They usually last the entire life of the car. If yours don’t, however, they’ll need to be replaced in pairs. If one front coil spring breaks, you’ll have to replace both front coil springs, and same with your rear ones.
And lastly: Replacing coil springs can be dangerous, given the amount of pressure holding them in place. So, if you think that fence you built is looking good, and you’re feeling a little eager to do another DIY project, just…don’t.