What is 8K spring rate?

When someone says “8K” they are shortening the metric measurement of the spring rate; in this case 8 kg/mm. What this means is that if you apply 8 kilograms of weight to the top of the spring it will compress 1mm. If you apply another 8 kilograms (16kg total) of weight it will compress another 1mm.

Is higher spring rate better?

See all 13 photos Your springs’ rate—the amount of weight required to compress themselves a single inch—should be settled upon before getting too far into suspension upgrades. Get it right and you’ve just improved handling and grip. The bigger the number, the stiffer the spring.

What spring rate do I need coilovers?

With a typical street car, you’re looking for the weight of the vehicle to compress the springs 25- to 30-percent. For drag cars, you will typically want between 30- and 35-percent of the spring to compress.

How do I check my coil spring rate?

To test the spring rate, the spring is placed into a spring rate tester, like shown above, and is pre-compressed one inch (or millimeters if you’re using that measurement) and then compressed further to get the measurement for the next inch of compression.

How does spring rate affect ride?

A lower rate spring that lowers the ride height of the chassis with no bumpstop trimming, making the bumpstop more active, would feel about as stiff as a higher rate lowering spring with the bumpstop trimmed, making the bumpstop less active. Also, the amount of ride height lowering also affects suspension rate.

What is the max load of a spring?

The maximum load that a standard variable spring can support is 50,000 lbs. The maximum load that a standard constant spring can support is 90,000 lbs.

What does a stiff spring mean?

The spring constant, k, is representative of how stiff the spring is. Stiffer (more difficult to stretch) springs have higher spring constants. The displacement of an object is a distance measurement that describes that change from the normal, or equilibrium, position.