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What size are my leaf springs?

The size of your leaf springs is an important factor in determining the load-bearing capacity and ride quality of your vehicle. Leaf springs are a type of suspension system that uses a series of flat, curved metal leaves stacked on top of each other to support the weight of the vehicle and absorb shocks from the road.


What are Leaf Springs?


Leaf springs are a common suspension system used in many vehicles, particularly trucks, SUVs, and some cars. They consist of a series of flat, curved metal leaves that are stacked on top of each other and secured at one end to the vehicle's frame. The other end of the leaf springs is connected to the vehicle's axle, allowing the springs to flex and absorb shocks as the vehicle travels over uneven terrain.


Determining Leaf Spring Size


The size of your leaf springs is typically determined by the weight of your vehicle and the load it is expected to carry. Larger, heavier vehicles will generally require larger and more robust leaf springs to support the additional weight. The size of the leaf springs is usually measured in terms of the width, length, and thickness of the individual leaves.



  • Width: The width of the leaf springs is typically measured in inches and can range from around 2 inches to 4 inches or more, depending on the size and weight of the vehicle.

  • Length: The length of the leaf springs is also measured in inches and can range from around 30 inches to 60 inches or more, again depending on the size and weight of the vehicle.

  • Thickness: The thickness of the individual leaves is typically measured in fractions of an inch, such as 1/4 inch or 3/8 inch, and can vary depending on the load-bearing requirements of the vehicle.


In addition to the physical dimensions of the leaf springs, the number of leaves and the type of steel used in their construction can also affect the overall strength and load-bearing capacity of the suspension system.


Choosing the Right Leaf Spring Size


When selecting the appropriate leaf spring size for your vehicle, it's important to consider the weight of the vehicle, the load it will be carrying, and the type of driving conditions it will be subjected to. Larger, heavier vehicles will generally require larger and more robust leaf springs, while smaller, lighter vehicles may be able to use smaller and more compact leaf springs.


It's always a good idea to consult with a professional mechanic or suspension specialist to ensure that you choose the right leaf spring size for your specific vehicle and driving needs.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.