How Ferrari is improving SF-26 cornering stability through rear floor airflow control. SF-26 aerodynamic update: Ferrari focuses on rear floor consistency over peak downforce.

Ferrari SF-26: controlling airflow in the most critical area

In modern Formula 1, and even more so under the 2026 technical regulations, the floor remains a central element of aerodynamic performance. Its effectiveness is no longer solely about generating downforce directly but instead relies on controlling and stabilizing the airflow around the car. This is the key to understanding the work Ferrari carried out on the SF-26 in the rear section of the floor during the first Bahrain tests.

The cuts located at the end of the floor, near the rear wheels, are not designed to create additional aerodynamic downforce nor do they serve as a “seal” in the traditional sense. Their purpose is more precise: to limit the impact of turbulence generated by the rear tire on the floor’s performance.

The rear tire is one of the main sources of aerodynamic disturbance for the entire car. Its rotation, carcass deformation, and lateral pumping of air produce a highly unstable airflow, which tends to invade the lateral and rear areas of the floor, right where downforce is most sensitive to pressure changes.

When the wake from the rear tire directly interacts with the floor, the car primarily loses load consistency. On corner exit, with the tire at full traction, the airflow shifts rapidly, making the car less predictable. The purpose of the floor cuts is to mitigate this effect. They do not eliminate the disturbance, but they diffuse it, reducing its destabilizing impact. Additionally, they smooth the interaction between the undisturbed floor airflow and the tire-generated turbulent flow, helping the floor behave more consistently.

Under the 2026 regulations, without downstream aerodynamic devices to aid in flow extraction, this aspect becomes even more critical. The floor must operate largely independently, and any separation at the rear section is difficult to recover. Ferrari’s intervention on the SF-26 in Bahrain should therefore be interpreted in this context: the focus is not on peak downforce, but on achieving greater aerodynamic stability.

From a performance perspective, the advantage does not appear as an increase in maximum downforce but as more consistent load generation. The car becomes more predictable on corner exit, less sensitive to rear tire variations, and more stable under traction, particularly in non-ideal conditions.