King Coilover Spring Rate Calculator

Spring Rate	Spring Rate (lb/in)
200 lb	200 lb/in
250 lb	250 lb/in
300 lb	300 lb/in
350 lb	350 lb/in
400 lb	400 lb/in
450 lb	450 lb/in
500 lb	500 lb/in
550 lb	550 lb/in
600 lb	600 lb/in
650 lb	650 lb/in
700 lb	700 lb/in
750 lb	750 lb/in
800 lb	800 lb/in
850 lb	850 lb/in
900 lb	900 lb/in

FAQs

How do I choose the right spring rate for coilovers? Choosing the right spring rate involves considering your vehicle’s weight, intended use (street, track, off-road), and personal preferences. Heavier vehicles generally need stiffer springs, while lighter ones can work with softer rates. For a balanced setup, consult suspension experts or use online calculators.

How do I know what spring rate I need? You’ll need to know your vehicle’s weight, weight distribution, and the type of driving you’ll be doing. A common approach is to calculate the required spring rate based on your car’s weight distribution and desired handling characteristics.

What is a 7k spring rate? A 7k spring rate means the spring requires 7,000 pounds of force to compress it by one inch. It’s an indicator of the spring’s stiffness.

Does higher spring rate mean a stiffer ride? Yes, a higher spring rate indicates a stiffer ride. Stiffer springs resist compression more, leading to less body movement and a firmer feel.

What does 8K spring rate mean? An 8k spring rate signifies that the spring needs 8,000 pounds of force to compress it by one inch.

Is a higher spring rate better for coilovers? It depends on your preferences and the intended use. Higher spring rates provide better handling and reduced body roll, but may sacrifice some ride comfort.

Is it better to have a higher spring rate? It depends on your goals. Higher spring rates improve handling and reduce body roll, but they can make the ride stiffer and less comfortable.

Is a higher or lower spring rate better? Higher spring rates are better for performance-oriented driving and reduced body roll, while lower rates offer a smoother and more comfortable ride.

What is a 10k spring rate? A 10k spring rate means the spring requires 10,000 pounds of force to compress it by one inch.

What is the spring rate constant K? The spring rate constant (K) indicates the amount of force required to compress a spring by a certain distance. It’s a measure of the spring’s stiffness.

Is it better to have stiffer or softer suspension? Stiffer suspension offers better handling and less body roll, but can be less comfortable. Softer suspension provides a smoother ride but sacrifices some performance.

Does more preload mean a stiffer ride? Yes, more preload on coilovers increases the initial tension in the spring, making the ride stiffer.

Do softer springs improve ride quality? Yes, softer springs provide a smoother ride by allowing more suspension travel and absorbing bumps better.

What is a 6k spring rate? A 6k spring rate means the spring requires 6,000 pounds of force to compress it by one inch.

What is the meaning of 12k spring rate? A 12k spring rate indicates that the spring needs 12,000 pounds of force to compress it by one inch.

Can you adjust spring rate on coilovers? Spring rates on coilovers are typically not directly adjustable; they need to be physically replaced to change the spring rate.

Does the number of coils affect spring rate? Yes, the number of coils can influence the spring rate. More coils generally indicate a softer spring, while fewer coils imply a stiffer spring.

What progression for coil shock? Progressive coil shocks have a variable spring rate; they start softer and become stiffer as they compress. This can offer a balance between comfort and performance.

Which spring rate is stiffer? A higher spring rate indicates a stiffer spring.

Do coilovers get stiffer the lower you go? Yes, coilovers can become stiffer as you lower the ride height due to changes in the suspension geometry.

What is 4k spring rate? A 4k spring rate means the spring requires 4,000 pounds of force to compress it by one inch.

Why do coilovers ride rough? Coilovers can ride rough if the spring rates are too high for the road conditions or if they’re not properly tuned to the vehicle’s weight and intended use.

Do stiffer springs exert more force? Yes, stiffer springs require more force to compress, exerting greater force against the vehicle’s weight.

Does spring rate affect stiffness? Yes, spring rate directly affects stiffness. A higher spring rate leads to a stiffer suspension.

Should the front and rear spring rates be the same? Not necessarily. Front and rear spring rates can be different to optimize weight distribution and handling balance.

Does spring rate affect ride height? Yes, spring rate can influence ride height. Stiffer springs might result in a slightly higher ride height due to less compression under the vehicle’s weight.

What is a progressive spring rate? A progressive spring rate varies as the spring compresses, becoming stiffer. It offers a compromise between comfort and performance.

What spring rate for drift cars? Drift cars often use a combination of spring rates to balance control during slides and maintain traction.

How do spring rates affect handling? Spring rates influence how weight is distributed during cornering and how the vehicle responds to road irregularities. Stiffer springs reduce body roll and improve handling response.

What spring rates do you want for drifting? Drifting requires a setup that allows controlled slides, often achieved with a combination of spring rates that balance grip and slip.

What is a 5k spring rate? A 5k spring rate means the spring requires 5,000 pounds of force to compress it by one inch.

What is spring rate on coilovers? Spring rate on coilovers refers to how stiff the springs are and their ability to support the vehicle’s weight.

What is the spring rate in pounds? Spring rate is typically measured in pounds of force required to compress the spring by one inch.

How can I make my spring stronger? To increase spring rate, you need to replace the existing springs with ones that have a higher spring rate constant.

What happens when the spring constant K is increased? Increasing the spring constant (K) makes the spring stiffer, requiring more force for the same amount of compression.

How do you calculate rear shock spring rate? Rear shock spring rates can be calculated based on vehicle weight, weight distribution, suspension geometry, and desired handling characteristics.

What suspension gives the smoothest ride? Independent suspension systems often provide a smoother ride compared to solid axle suspensions.

What happens if the suspension is too soft? An overly soft suspension can lead to excessive body roll, reduced stability during cornering, and bottoming out over bumps.

What happens if the suspension is too stiff? An excessively stiff suspension can result in a harsh and uncomfortable ride, transmitting road imperfections directly to the vehicle’s occupants.

What does too much preload feel like? Excessive preload can make the suspension feel overly stiff and less responsive to small bumps.

Can you have too much preload on coilovers? Yes, too much preload can negatively affect ride quality and handling, making the suspension too stiff.

Is low preload better than high preload? It depends on your preferences and the vehicle’s characteristics. Excessive preload is generally not recommended as it can lead to a harsh ride.

What is the most comfortable suspension type? Air suspension systems often provide the most comfortable ride due to their adjustable nature and ability to adapt to road conditions.

How do I make my ride smoother? To make your ride smoother, you can consider adjusting your suspension settings, using softer springs, improving tire quality, and maintaining proper tire pressure.

What gives a smoother ride? A combination of proper suspension tuning, quality shock absorbers, appropriate tire choice, and road conditions contribute to a smoother ride.

What is the recommended spring rate? There’s no one-size-fits-all recommendation for spring rates. It depends on your vehicle’s characteristics, intended use, and personal preferences.

What is the spring rate 8K on coilover? A spring rate of 8K on a coilover means the spring requires 8,000 pounds of force to compress it by one inch.

Is stiffer suspension better for speed? Stiffer suspension can improve stability and handling at higher speeds, but extreme stiffness can negatively impact traction and ride quality.

Will stiffer springs reduce body roll? Yes, stiffer springs will generally reduce body roll during cornering due to reduced lateral weight transfer.

What is the best spring rate for coilovers? The best spring rate for coilovers depends on your vehicle’s weight, suspension design, and intended use. Balanced setups often consider both front and rear spring rates.

Is it better to have a higher spring rate? Higher spring rates are better for performance-oriented driving and reduced body roll, but they can make the ride stiffer and less comfortable.

Does preload affect stiffness? Yes, preload affects stiffness. More preload increases initial tension, making the suspension stiffer.

Should you preload coilovers? Preloading coilovers is necessary to ensure proper suspension function and prevent uncontrolled suspension movement.

Is a coil spring stiffer if it has more or fewer coils? A coil spring with fewer coils is generally stiffer than one with more coils, assuming other factors are constant.

Does more coils mean more power? The number of coils in a spring doesn’t relate to power. Springs store and release energy, but it’s not directly related to the number of coils.

Does cutting a coil spring make it stiffer? Cutting a coil spring can make it stiffer due to reducing its overall length, but it’s not a recommended method for adjusting spring rates.

How long does it take for coils to settle? Coils can settle within a few days to a few weeks of driving as they adjust to the vehicle’s weight and usage.

How much preload does a coil shock have? Preload on coil shocks is typically set to ensure proper suspension function without inducing excessive stiffness. It varies based on the vehicle and suspension design.

Are soft or stiff springs better? Soft springs offer a smoother ride but might compromise handling, while stiff springs enhance handling but can reduce comfort.

Is a larger spring constant stiffer? Yes, a larger spring constant (K) indicates a stiffer spring.

How stiff should I set my coilovers? Coilover stiffness depends on various factors like vehicle weight and usage. It’s recommended to start with manufacturer recommendations and adjust based on your preferences.

Is it better to have stiffer or softer suspension? Stiffer suspension offers better handling and less body roll, but can be less comfortable. Softer suspension provides a smoother ride but sacrifices some performance.

How many pounds is an 8k spring? An 8k spring requires 8,000 pounds of force to compress it by one inch.

Do coilovers ruin ball joints? Improperly installed or adjusted coilovers can potentially cause excessive wear on ball joints and other suspension components.

Are stiffer coilovers better? Stiffer coilovers can improve handling performance, but the “better” option depends on your vehicle, driving style, and comfort preferences.

What are the benefits of stiffer springs? Stiffer springs offer reduced body roll, improved cornering, and enhanced responsiveness, which can be beneficial for performance driving.

Why do stiff springs have less grip? Excessively stiff springs can lead to reduced tire contact with the road, affecting traction and grip, especially over uneven surfaces.

What happens to a spring’s force if you stretch it more? Stretching a spring increases its potential energy and the force it exerts when compressed. It becomes stiffer.

How does spring force affect acceleration? Spring force affects weight transfer during acceleration. Stiffer rear springs can help reduce squat and maintain traction.

Are rear springs stiffer than front? Rear springs are often stiffer than front springs to balance weight distribution and prevent excessive weight transfer during acceleration and braking.

Does spring rate change with preload? Yes, preload affects effective spring rate. Increasing preload effectively makes the spring stiffer.

What is a good ride height for coilovers? The ideal ride height depends on your vehicle, intended use, and personal preferences. Consult with suspension experts for recommendations.

Do lowering springs make the ride harsher? Lowering springs can make the ride harsher due to reduced suspension travel and altered geometry, transmitting more road imperfections to the cabin.

Do progressive rate springs provide a firmer ride? Progressive rate springs can provide both a comfortable ride over small bumps and a firmer feel during aggressive driving.

What’s better, linear or progressive springs? Linear springs offer consistent compression rates, making them more predictable for certain applications. Progressive springs adapt their stiffness based on compression.

Are stiffer springs better for drifting? Stiffer springs can help control weight transfer during drifting, but the ideal setup depends on the driver’s preferences and the vehicle’s characteristics.