Things You Need to Know about Vehicle Coil Springs

Coil spring which absorbs shock and maintains a force between contacting surfaces. Some auto repairs and services contain cut coils. You can also buy well-produced coil springs from Steel Coil Supplier or any steel coils manufacturer of your choice.

Features of Vehicle Coil Springs.

Coil springs’ characteristics depend on the material and design from which it is manufactured. Generally, these are made from various materials like steel alloys, high carbon wire, non-ferrous metals, and also stainless steel. Coil spring materials generally have high tensile strength and good wear resistance to withstand different load demands. These springs look the same but give different load ratings which are normally identified by the color it coded. The springs may be cylindrical, barrel-shaped or conical in shape. And different wire diameters are used in manufacturing different coil springs. Though it is inconspicuous when compare with your vehicle, the importance of them is self-evident. Bad or worn out coil springs can cause vehicle tires misaligned. In rough or uneven roads, vehicle stabilizing and handling capabilities are compromised with a broken coil springs which will manifest excessive sway and wobble.

Types of Vehicle Coil Springs

  • Helical springs

Helical springs are helix-shaped coiled wire which can be used for tensile or compression loads. There are two kinds of helical springs which are compression helical spring and tension helical spring. They have many advantages including easy assembly and availability in wide ranges. The cross-section of the coil spring wire could be circular, rectangular, or square in shape. These springs have constant spring rates and performance that are accurately predictable. The characteristics of these springs vary by changing its dimension and wire diameter.

  • Progressively-wound springs

A progressive spring provide optimum spring rate for different road conditions and application. The coil pitch gets tighter as it gets to the top of the spring which gives the spring increased resistance as it is compressed. Most manufacture-fitted car springs are normally wound or consistently pitched all the way to the spring. However, owners usually upgrades normally wound springs to progressively wound springs for addressing vehicle traction, handling, and control concerns. Progressive springs deflect energy under a light load and with the load increasing, resistance increasing which can help to provide a softer ride.

  • Cutting Coil Springs

It is the“Popular wisdom” rules that cutting coils does increase the spring rate and could be a good way to lower your vehicle. With a few tools, such as a coil compressor and angle grinder, you can cut the coil springs yourself. All of the tools and supplies necessary to cut coil springs are available at auto parts stores.You need to keep in mind rules here I mentioned to avoid permanently destroying your springs.

  1. Cut Springs with Tangential Ends Only

Coil springs have 3 basic types of ends. Tangential end is where the end of the coil continues to twist off into space. A spring with a tangential end would fall over if you tried to stand it on its end. Square one is which the last coil bends back down to touch the coil below it. Square end allows the spring to stand up when placed on this end. Pigtail style, the last coil of the spring is the square type. However, it has a much smaller diameter than the coils in the body of spring. The design of the end of the spring determines if it can be safely cut. Once found it has the right end, you can cut it. Coil springs with tangential ends are the only coil springs that can be safely cut.

vehicle coil springs


  1. Heat

Heat is a spring’s worst enemy but in order to reshape your coil spring, the steel must be heated. Square or Pigtail ends are designed to make full contact with their mounting points which means they have to be reshaped after they were cut. So it is not safe to cut these two kinds. Also, a heated spring is a ruined spring since you cannot do anything to make a soft spring hard again and a soft spring cannot hold up your vehicle.

vehicle coil springs


  1. Maximum of Two Inches

If you cut the coil springs you will lose some compression strength. You have to make sure that lower your vehicle a maximum of two inches. When altering ride height, you must be aware of much more than just the springs. Brake lines, steering, shock length and other areas of interference. Too much lowering can cause other parts of the vehicle to hit each other (metal to metal contact) and only do 2 Inches at most can help to make sure this problem does not occur.

Coil springs replacement

When you have to replace a coil spring on the front suspension, you have to make sure that the replacement spring must in correct rating. It’s better to replace both front springs since the other one may not match the rating of the new spring to be fitted. and when one side fails, quite often the other is getting close too.

  1. The suspension ready for removal of the spring. Make sure the axle stand is placed far enough back to allow removal of the spring and lower-wishbone arm.
  2. Use a ball-joint separator to split the joint. Do not hammer the joint stud to free it – the threads will be damaged.
  3. Undo and remove the bolts connecting the tie bar to the lower arm.
  4. With the jack compressing the coil spring slightly, undo the top and bottom damper mountings and withdraw the bolts to free the damper.
  5. Make sure that the hooks on the compressors are firmly seated over the coils of the spring.
  6. Use a ball-joint separator to disconnect the joint from the steering swivel member.
  7. Tie up the upper wishbone with wire to avoid straining the brake hose. Compress a new spring before fitting.The top coil of the spring may be flattened. Be sure to fit the new spring in the same way.