The weight of your whole vehicle is supported by four coil springs. This means each of the springs needs to be very strong. Each of the springs is designed at the factory having a specific spring rate to maximise performance and comfort for your specific vehicle.

The two major components that determine how your car reacts to bumps are the shocks and springs. There are some shocks that are mounted within the coil spring. It is referred to as “Coilover” for short or a coil-over shock absorber suspension setup.

There are many vehicles that come from the factory with Coilover suspension. However, there are also numerous aftermarket options that are available to help you improve cornering performance by allowing you to alter the spring rates or lower the height of your ride.

The coil spring’s upper part is positioned under the spring perch (in Coilover suspension it is sometimes referred to as a top hat). The bottom part of the coil spring is located on the lower control arm. This arm helps to keep the wheel stay securely in place.

Since the spring is over the lower control arm, all of the shock from underneath is absorbed by it. This allows the people inside of the cabin of the vehicle over the coil spring to continue to be comfortable as they are driving over obstacles that are in the road.

Top 3 Symptoms Of Bad Coil Springs

If your car has a bad coil spring, you will definitely experience some noticeable symptoms. After you are able to recognise them you can immediately do something to address the problem.

The following are five of the most symptoms that there is a faulty coil spring on your vehicle.

Sagging Corer

The corner of your car might be lower than the other corners or may sag if the vehicle has a bad coil spring. You will be able to notice this easily by just looking at your car from the outside.

However, when you are driving your car, the sagging will also cause the vehicle to be less stable. Other symptoms will worsen due to this problem, including excess wear and tire of the tyres. Since the spring is over the lower control arm, all of the shock from underneath is absorbed by it. This allows the people inside of the cabin of the vehicle over the coil spring to continue to be comfortable as they are driving over obstacles that are in the road. As a side point, if you are looking for car lowering springs see here.

Bounciness

The purpose of the coil springs is to prevent your vehicle from bouncing up and down and shaking as it travels down the road. However, if your vehicle has bad coil springs they will be unable to prevent the bounciness.

This means you will be experiencing lots of shaking and bouncing as you are driving, especially when you are driving over roads with numerous potholes or over travelling over rough terrain. Most likely that will make it very hard to control your vehicle.

Similar symptoms can be exhibited by a bad shock. Bad shocks are typically not able to absorb the spring’s rebound, so when you hit a large bump your vehicle will feel like a trampoline.

Uneven Tyre Wear

Coil springs are designed to keep the tyres and wheels of your car always in contact with the road. That allows your tyres to receive equal amounts of wear and tear while they are travelling down the road.

If your vehicle has bad coil springs, then at times the tyres might leave the road, even under normal driving conditions. Once this occurs, the treads of your tyres will start to wear unevenly and prematurely which can cause drivability problems out on the road. Your tyres will also need to be replaced much sooner than normal even if you rotate them.