Field Report: Why YOU Are Doing Car Aero WRONG.

We often chase engine and tuning upgrades first, but could a front splitter and rear wing be a smarter starting point for our race cars?

We caught up with Kyle Forster from JKF Aero to break down how aerodynamics work in practice and how to make effective improvements at every level of motorsport. From the priorities of downforce vs drag, to choosing the right aero balance for your car's drivetrain layout, this conversation covers everything from tuft testing a club racer to CFD and F1-style development cycles, noting Kyle was an aerodynamicist for the Mercedes Formula 1 team during their hybrid era peak.

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Kyle explains key tuning strategies using splitters, wings, rake, and gurney flaps, plus the difference between 2D and 3D wing profiles and how things like swan neck mounts and dual elements can drastically improve efficiency and downforce. He also clarifies some common misconceptions about turbulent flow, stalling, and the practical implications of end plate design, big and small.

Practical advice is given for grassroots racers, including the use of tufts or strong coast-down testing, and why stopwatch and driver feedback still matter. At the professional level, Kyle explains how CFD, wind tunnel testing, and track validation work together in a continuous development loop for professional motorsport including Formula 1 car development.

So, where are the biggest gains to be had for a club racer? As you might have guessed, front splitters and rear wings. Get them on the car and develop over time from there, forgetting about flat floors and rear diffusers until further down the line is Kyles advice.

Whether you're trying to gain lap time at your local time attack event or you’re part of a pro-level development team, this video gives valuable insight into how to build aero that works. To see more of Kyle’s work, check out JKF Aero at jkfaero.com or his YouTube channel ‪@KYLEENGINEERS‬.