Are lowering springs or coilovers necessary to handle the extra power from tuning?

Introduction

Lowering springs or coilovers are not strictly necessary to handle the extra power from tuning, but they are strongly recommended. Better suspension reduces body roll, improves traction, and makes the extra power more usable and enjoyable on the road.

The Details

When you add power through an ECU tune, you are increasing the force that the car puts through the tyres. Without upgrading the suspension, the car will likely experience:

• More body roll: The stock suspension is calibrated for the stock power level. With more torque, the car leans more in corners, reducing confidence and limiting the speed at which you can corner
• Reduced traction: More torque means more wheelspin, particularly on exit from corners. The stock suspension allows too much weight transfer to the rear, reducing grip
• Less composed ride: The stock suspension can feel soft and unrefined with increased power, particularly on imperfect road surfaces

A suspension upgrade (lowering springs or coilovers) addresses these issues by reducing body roll, keeping the car flatter through corners, and improving the overall composure of the vehicle. This makes the extra power feel more controlled and more usable.

Lowering springs are a cost-effective way to lower the car and stiffen the suspension slightly. They are a good first step but are a compromise, as they lower the car without offering the adjustability of coilovers.

Coilovers are full adjustable suspension systems that allow you to set ride height, damping, and sometimes camber. They are more expensive but provide much greater control over the car's handling characteristics. For serious performance driving, coilovers are the better choice.

The Risks and Trade-offs

Not upgrading suspension when you add power is not dangerous, but it does limit how much you can enjoy the extra performance. You may find that the car feels less composed, wheelspins more easily, and does not feel significantly faster because the handling does not keep up with the power.

The trade-offs of upgrading suspension are:

• Cost: Quality lowering springs start around $600, while a full coilover kit can be $2,000-$4,000
• Ride quality: Stiffer suspension can be harsher on rough roads
• Installation complexity: Suspension work requires professional installation and wheel alignment

The Sherzad Haus Approach

We recommend that clients consider suspension upgrades as part of a complete performance build, but they are not a prerequisite for tuning. We will tune your car regardless of whether you have upgraded suspension, but we will advise you that the full benefit of the extra power is best experienced with better suspension.

For clients who use their car primarily for road driving and occasional spirited runs, we often suggest starting with quality lowering springs as a sensible first step. For clients who track their car or want the best possible handling, we recommend coilovers.

We can discuss your driving style and goals during the Performance Health Check and make recommendations that match your priorities and budget.

Conclusion

Suspension upgrades are not required to tune your car, but they significantly improve how the extra power feels on the road. Lower body roll and better damping make the car more composed, reduce wheelspin, and give you more confidence in corners. Budget for suspension as a meaningful part of your build, even if it comes after the initial tune.

To discuss what modifications suit your driving style and goals, book a free Performance Health Check and we can create a prioritised plan.