Leaf springs are one of the oldest forms of suspension. For hundreds of years, leaf springs have been used on automobiles, carriages, trailers, and so much more—and they’re still in use today. On the ...

Leaf springs lead a tough life. They are faced with the dual responsibility of both locating and suspending axles. Over thousands of cycles, leaf springs eventually fatigue and either sag or break.

Fifty years is a long time, especially for a vehicle's suspension components. Although the shocks get replaced regularly, leaf springs are rarely given much thought—unless you want to lower the ...