Lousy suspension can lead to a bumpy ride and a banged up vehicle. Furthermore, it can also be very problematic when you're towing heavy cargo, which may sway and bounce as you cruise along. Fortunately, our ancestors passed on to us a revolutionary invention to help us deal with such problems: the leaf spring. This suspension component helps in stabilizing your vehicle and in providing excellent suspension for your tow vehicle. Leaf springs come in different varieties, so it's best that you know what you're dealing with before buying a replacement leaf spring.
Types of Leaf Springs
Otherwise known as single-leaf springs, monoleaf springs are made with only one plate of spring steel. You can identify this type of leaf spring by looking at its design; it's usually thick in the middle then thins out toward the end. This component boosts suspension performance but doesn't really offer much strength when dealing with towed vehicles.
Now these are the bad boys we recommend for hauling heavy loads. Multileaf springs consist of many springs of varying length. These springs are stacked on top of each other and provide ample support and strength for managing hefty trailers.
Leaf Spring Ends
Double-eye Leaf Springs
These springs have top plates that have their ends curved into a circle. These ends make two holes that you can hook up to your trailer's bottom frame. These are recommended only for medium utility duty applications (less than 7,000 lbs).
Open-eye Leaf Springs
These springs only have one "eye" or open hole, with its other side coming in the form of either a hook end or a flat end. This type of spring is highly beneficial because it requires you to maintain only one mounting point, and it can withstand light to heavy duty loads.