Dial in your stance and handling—coilovers give you the control, but only if you understand the settings.

Coilovers give you more control over how your car handles, feels, and sits. But unlocking that control means understanding what each adjustment actually does. Let’s break down the main adjustments:

Ride height - Adjusts how low (or high) your car sits. This affects center of gravity, suspension travel, and even alignment.

Damping - Controls how fast the shock moves. Compression affects how the suspension reacts when the car hits a bump; rebound controls how it recovers afterward.

Preload - Changes the amount of tension on the spring when the suspension is fully extended. It won’t raise or lower the car on its own, but it can affect how quickly the spring reacts.

Camber plates - If included, these let you fine-tune how much your wheels tilt inward or outward (camber) by adjusting the coilover top mounts. They’re great for dialing in better handling without messing with factory suspension parts.

For everyday driving, the goal is a setup that feels good, handles well, and doesn’t beat you up on rough roads. Softer damping helps the suspension absorb bumps without feeling too floaty. To get there, dial in softer damping so the suspension soaks up bumps instead of bouncing over them. Keep your ride height moderate; not too low to avoid rubbing, but low enough to help with handling. Set preload close to the factory baseline; this keeps your springs reacting naturally without making things harsh.

Bonus tip: Avoid maxing out any adjusters; more isn’t always better. Big changes can throw things off, while small, controlled adjustments can lead to real performance gains.

Everyday driveability, done right—A softer damping setup glides over bumps, delivering comfort without compromising control.

Stay locked in. Firm damping and lowered ride height keep your car planted and ready for aggressive cornering.

When you’re headed to the track, it’s all about grip, quick response, and cutting down body roll. Firmer damping helps keep the car planted and lets it react faster to what you’re doing behind the wheel. You’ll want to drop the ride height a bit; just not so much that you start rubbing or bottoming out. A little extra preload can also help the car feel more responsive, especially in fast corners or quick transitions.

Tweak rebound and compression based on feedback from the car and tires; some of it only shows up at speed.

Pro tip: Write down your settings before and after each session; It’ll save time and guesswork later.

Swapping between street and track setups is easier when you start with a solid baseline. In most cases, this means a street-friendly configuration that balances comfort and control for daily driving. From there, you can fine-tune a more aggressive setup for track days, then return to your original settings when you're back on the street. Mark your adjusters and record how many clicks or turns you’ve made so you can easily switch back and forth. With a bit of practice, the whole process usually takes 15 to 30 minutes. Small changes can make a noticeable difference, so take the time to experiment and find what works best for your driving style as well as the layout of the course.

Switching between street comfort and track performance is simple when you begin with a solid baseline and mark your settings for easy changes.

Common coilover mistakes like stiff damping, extreme lowering, or skipping preload adjustment can cost you comfort and control. Regular checks keep your setup sharp.

• Setting the damping too stiff for everyday driving makes the ride harsh and uncomfortable, wearing you out on regular roads.
  
• Lowering the ride height too much without fixing the alignment causes uneven tire wear and can make the car handle unpredictably.
• Forgetting to adjust the preload leads to poor suspension response, affecting how the car reacts to bumps and turns.
• Not checking your settings again after driving a few hundred miles; suspension parts settle over time, so your initial settings might change and need tweaking.
  
  

Great suspension performance depends on having the right gear and dialing it in correctly. The IAG Spec Street Series by Fortune Auto is a solid coilover option that combines comfort and capability for drivers balancing street driving with track days.
Key features include:

• 24 levels of damping adjustment
  
• Independent preload and ride height settings
  
• Extended top hats to protect the shocks during full travel
  
• Strong yet lightweight aluminum parts
  
• Flow Digressive piston technology for smooth, adaptive performance
  
  

IAG Performance teamed up with Fortune Auto to create the Spec Street Series Coilovers, combining expertise to deliver top performance on both street and track.

Get the most from your IAG Spec Coilovers with guidance from our experts, who helped design them and know exactly how to dial in the perfect setup.

Need help dialing in your IAG Spec Street Series Coilovers? Every car is different, so start with small adjustments and see how your car responds. A good starting point for a sporty street setup is roughly 12 clicks from soft in the rear (halfway through the 24-click range) and about 10 clicks from soft in the front. On our Subaru STI, a ride height around 1.5 inches lower than stock delivers a responsive, controlled feel without sacrificing comfort—a .75–1.5 inch drop from stock is usually a solid place to start. When heading to the track, firm up the damping a few clicks at a time—on our setup, an additional 4 clicks improved handling and cornering response.