Suspension systems play a vital role in enhancing vehicles’ overall performance and comfort. They are responsible for absorbing shocks and maintaining stability, ensuring a smooth and controlled ride. One crucial component of suspension systems is suspension springs. These springs support the vehicle’s weight and contribute to its overall handling and ride quality.

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Overview of Suspension Systems

Suspension systems are designed to cushion and enhance the vehicle’s stability. They work by absorbing the impact of bumps, potholes, and uneven road surfaces, minimizing vibrations and ensuring better tire contact with the road. Suspension springs, as part of the suspension system, play a crucial role in absorbing and distributing the weight of the vehicle evenly, allowing for optimal handling and comfort.

Understanding Suspension Springs

Suspension springs are specifically designed to support the weight of the vehicle and provide a smooth ride. These springs work by compressing and expanding as the vehicle moves, absorbing the impact and preventing excessive bouncing or swaying. They are typically located between the vehicle’s frame and the suspension components, such as the control arms or axle. Selecting the appropriate suspension springs based on the vehicle type and specific needs is essential to ensure optimal performance and comfort.

Types of Suspension Springs

A. Coil Springs

Coil springs are one of the most commonly used suspension springs in vehicles. They are made of a series of metal coils and are known for their durability and reliability. Coil springs provide excellent support and stability, making them suitable for various vehicle types, including sedans, SUVs, and trucks. These springs offer a controlled and balanced ride, ensuring better handling on different road surfaces. However, they may have a stiffer ride compared to other suspension spring types.

Some key points to consider about coil springs:
They are costeffective and widely available for replacement or upgrade purposes.
Coil springs can be adjusted or customized to achieve a desired ride height or stiffness.
Their durability makes them ideal for offroad vehicles or those subjected to heavy loads.
Coil springs can be paired with other suspension components, such as shock absorbers, to further enhance ride quality and performance.

B. Leaf Springs

Leaf springs consist of multiple layers or leaves of spring steel bound together. They are commonly found in trucks and heavyduty vehicles due to their ability to handle heavier loads. Leaf springs offer a smoother ride and better weight distribution, making them suitable for vehicles that frequently carry heavy cargo. These springs provide excellent loadcarrying capacity and stability, ensuring better control over the vehicle. However, they may not provide as much comfort as other suspension spring types.

Some key points to consider about leaf springs:
They can be more costeffective compared to other suspension options, especially for vehicles with high load requirements.
Leaf springs are known for their durability and ability to withstand harsh conditions, making them suitable for commercial or industrial applications.
Regular maintenance, such as lubrication, is necessary to ensure optimal performance and prevent squeaking or noise.
Leaf springs can be upgraded with additional components, such as helper springs or shock absorbers, to improve ride quality and stability.

C. Torsion Springs

Torsion springs work by twisting or rotating to absorb shocks and maintain stability. They are often used in sports cars and vehicles with independent rear suspension systems. Torsion springs offer excellent handling and responsiveness, making them ideal for performanceoriented vehicles. These springs provide precise and controlled suspension movement, enhancing cornering ability and overall driving dynamics. However, they may require more maintenance and adjustments to ensure optimal performance.

Some key points to consider about torsion springs:
They offer superior handling characteristics, providing better traction and stability during aggressive driving maneuvers.
Torsion springs can be finetuned or adjusted to achieve desired suspension settings for specific driving conditions or preferences.
Regular inspection and lubrication of torsion bars are necessary to prevent binding or excessive wear.
These springs may require specialized tools or expertise for installation or adjustment, making professional assistance beneficial.

D. Air Springs

Air springs, also known as airbags, use compressed air to support the weight of the vehicle. They provide a smooth and adjustable ride, allowing for customization based on load capacity and desired comfort. Air springs are commonly found in luxury vehicles and RVs, offering a high level of comfort and ride quality. However, they may be more expensive to install and maintain compared to other suspension spring types.

Some key points to consider about air springs:
They allow for adjustable ride height, which can be beneficial for vehicles with varying load requirements or towing capabilities.
Air springs provide excellent shock absorption, minimizing vibrations and improving overall ride comfort.
These springs can be electronically controlled or integrated with adaptive suspension systems to further enhance ride quality and handling.
Regular inspection and maintenance of air springs, including checking for leaks and proper air pressure, are necessary to ensure optimal performance.

Factors to Consider when Choosing Suspension Springs

When selecting suspension springs, several factors should be taken into consideration. Firstly, the vehicle type and purpose play a significant role in determining the appropriate suspension springs. Different vehicles have varying weight distributions and handling requirements. For example, a heavyduty truck may require leaf springs to handle heavier loads, while a sports car may benefit from torsion springs for improved handling.

Secondly, the desired ride quality and comfort should be considered. Some suspension springs may offer a stiffer ride, providing better responsiveness and control, while others provide a more comfortable experience with smoother damping characteristics. Understanding the balance between ride comfort and handling performance is essential in choosing the right suspension springs.

Load capacity and weight distribution are also vital factors to consider, especially for vehicles that frequently carry heavy loads. Suspension springs should be selected based on their loadcarrying capacity to ensure optimal vehicle performance and stability. Additionally, the distribution of weight between the front and rear of the vehicle should be taken into account to achieve proper weight balance.

Lastly, cost and maintenance considerations should be evaluated. Different suspension springs may vary in terms of initial cost and longterm maintenance requirements. It is essential to weigh the benefits and drawbacks of each suspension spring type against the budget and maintenance capabilities.

Conclusion

In conclusion, understanding the four types of suspension springs is crucial for optimizing vehicle performance and comfort. Coil springs, leaf springs, torsion springs, and air springs each have their advantages and disadvantages, making them suitable for different vehicle types and needs.

By considering factors such as vehicle type, ride quality, load capacity, and cost, one can select the right suspension springs to ensure a smooth and controlled ride. Suspension springs play a vital role in maintaining stability, absorbing shocks, and contributing to overall vehicle performance, making them an essential component of any suspension system.

FAQ

Q1: What are suspension springs?
A1: Suspension springs are components of the suspension system that support the weight of the vehicle and contribute to its handling and ride quality.

The company is the world’s best automotive springs supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

Q2: What are the four types of suspension springs?
A2: The four types of suspension springs are coil springs, leaf springs, torsion springs, and air springs.

Q3: What are the advantages of coil springs?
A3: Coil springs are cost-effective, durable, and offer a controlled and balanced ride. They can be adjusted or customized and can be paired with other suspension components to enhance performance.

How to choose the correct springs for your application.

Author: Jack   Date Posted:2 May  

We often hear people saying "My mate told me to fit HD coils" or "I need 500kg leaf springs because I load up heavy for the Christmas holiday" but in most cases, it simply isn't true. Choosing the correct components is the difference between a harsh uncomfortable ride or a vehicle you will never want to get out of!

Below are some simple tips on how to set up your vehicle correctly, to maximise not only the ride comfort but the life of your suspension components. 

1. Front Spring Weight Rating

Setting up the front end of your 4WD can literally make or break your suspension setup. The key to choosing your front coil springs is simple, select the option that suits your vehicle currently. If you have a factory plastic bumper, select the plastic bumper coils. If you select a HD coil (for e.g. bar and winch) and do not have a bar and winch, you will not only have a harsh ride, you will damage your shocks. 

2. Constant Load

Simply put, your 'constant load' rating is how much weight you always have in there. Generally for leaf sprung vehicles we offer 3 different ratings, a 0-150kg or 0-300kg rating, a constant 300kg and a constant 500kg rating. These figures relate to what you always have on the vehicle, not occasional weight or weight that comes on and off the vehicle. 

0-150kg or 0-300kg rating

These leaf springs are suited to most drivers and will handle roughly the same load as your factory leaf springs. They are designed to give the best ride comfort, as well as handle occasional loads in the back. If you drive around empty or with a light load (such as a fridge), and every weekend or two you put some camping gear in the back and/or tow a trailer these are the leafs for you. These leafs are also suitable for drivers that have a constant weight of around 100kg in the back, for e.g. a fridge & rear mounted dual battery.

Constant 300kg

These leaf springs are suited to drivers that always have around 300kg in the back, this could be made up of tools & toolboxes, drawers, a canopy, a large water tank or heaps of other things. 

Constant 500kg

These leaf springs are suited to drivers that always have 500kg-GVM in the back. This includes the items listed above, but could also be a heavy steel workbody or other bulky items. We find most tradie vehicles that are always loaded up with lots of tools and supplies require these leaf springs, but you should always work out your constant load and find an applicable leaf for your situation. 

Constantly varying loads

Some days you have an empty tub, other days you are at GVM & towing a heavy load? Unfortunately with coil & leaf springs, generally you can't have your cake and eat it too. A light load leaf will settle down when loaded up, and a constant load leaf will ride extremely firm, and sit very high (causing shock damage) when empty. 

For vehicles that have constantly varying loads, we recommend pairing up a pair of light load leafs with an airbag kit, which will distribute the load correctly and will ensure that no matter if you are empty or at GVM, you will always have a comfortable ride. 

For more high tension springsinformation, please contact us. We will provide professional answers.

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