Cars and trucks need flexibility for handling road conditions and withstanding stopping and turning. Springs positioned between the wheels and the frame allow for movement and come at set heights from vehicle manufacturers as part of the suspension system. Lowering a car by adjusting the spring length or placement is a popular and relatively easy place to start.
Drop springs sold by auto parts suppliers can replace existing factory springs. But some car owners choose to cut the manufacturers' coil suspension springs instead, but this method can often cause the springs to weaken and even fail, resulting in an uneven or dangerous ride. Shortcuts can cost more over time because they can throw the car's alignment out of whack, which causes wear and tear on supporting parts like the frame, tires and undercarriage. Manufactured drop springs work better because they are the proper ratios for the vehicle's specs. Most are affordable, and cost less than $50, but there are higher-end springs that can cost more than $400.