When shopping around for lowering springs for your vehicle, I am sure you have came across the label "Linear" or "Progressive", but what exactly do those terms mean?
A linear spring has a spring rate that is constant along the entire length of the spring as it compresses. This will help let the driver know how the spring will react in various driving conditions. One sacrifice of having a linear spring is the ride quality will be much stiffer.
With a Progressive spring, it's like having two separate springs in one unit. In most cases the top of the spring, will feature a linear design with a set spring rate, where the bottom, is the progressive design, it gets a variable spring rate with different loads on the suspension system. You can think of the lower part of the spring as a "helper spring" as seen on some coilovers. The "helper spring" is soaking up the smaller imperfections in the road and giving the driver a nice ride quality. Once the helper springs are fully compressed, the top of the spring and that stiffer rate will start to take over, aiding in better cornering and stability.
Whiteline offers a multitude of lowering springs for multiple vehicles. Some being linear springs and some being progressive depending on the vehicle and the drop desired. We strive to make sure our springs suit very well with the OEM shocks or with after market shocks by making sure the drop of the spring is not too much for the shock as well as making the spring rate correct.
So, which is the right spring for you? That all depends on your driving characteristics and how you want the car to handle. It is after all; your car!
Check out the website here to locate lowering springs for your vehicle.