Jun 11, 21

Leaf Springs Versus Coil Springs

Most trucks and many older cars and SUV’S come with leaf spring suspensions from the manufacturers. The question over which is the better suspension has a long history. Leaf springs have been around for centuries while coil springs for only a hundred years. Both have proven their respective advantages. Which is better will always be a point of contention, but the answer largely boils down to the intended use. A leaf spring suspension is made of a series of long, relatively thin sections of spring steel metal attached at both ends to a frame and suspending the axle in the middle. Coil springs look just like one imagines a spring would, and sits on top of the axle or lower control arm and the chassis

Leaf Benefits

In terms of function, leaf spring suspensions are much simpler, since the axle is suspended by the spring, and does not require the complicated suspension geometry of the coil-spring set-up. Leaf springs are also much sturdier, and are capable of handling much higher loads with less deflection than coils.

Coil Benefits

Coils spring suspensions offer more range of suspension movement, and allow the user a wider turning envelope through the suspension range than leaf springs. Practically all high performance applications use coil springs. Coil spring suspensions usually perform better, having better engineered geometry than leafs.

Conclusion Leaf

For heavy, hauling or budget-limited applications leaf springs should be considered the rear suspension of choice. By design, leaf springs used on pickup trucks are the ideal suspension as most of these vehicles are used for load carrying applications  However, there are only a few applications which will benefit from leafs compared to coils.

Conclusion Coil

The two main drawbacks to a coil spring suspension are load-bearing. Cost isn't so much an issue, if the vehicle was originally equipped with coil springs, retro-fits can be very expensive and time consuming. Coils are not generally favored for heavy load carrying, as the coil on axle setup isn't nearly as stable or strong as a leaf spring.

Related Articles

Articles RAS At SEMA Show 2021

2021 has been a big year for Roadmaster Active Suspension. To continue that trend, we are excited to make our SEMA debut! Along with other big names in the industry, we’ll be in the in the middle o...

Articles How Much Is Too Much? - Truck Load Hauling Safety Answers

Being in the aftermarket suspension upgrade industry, we get the same question asked over and over again! How much will our product, Roadmaster Active Suspension (RAS), increase the payload or tong...

Articles Know Your Truck: The Basics of Tire Pressure & PSI

Tire inflation is the most basic principle of vehicle safety that people forget about or choose to ignore. Whether you are driving around town, towing your trailer or hauling your 5th wheel, having...

Ready For Added Strength?

Order your Active Suspension Kit today and join thousands of our customers who experience a safer, smoother, and more stable ride.

Find my kit