McLaren and Red Bull are preparing their response in Miami with completely upgraded cars.

Andrea Stella had promised "a completely new car" for Miami. The team principal of McLaren He wasn't lying: the Woking-based team presented several upgrades to its car at the fourth event of the season, mainly focused on aerodynamic performance and airflow conditioning.

The front section of the floor has been redesigned to improve interaction with the front wing, resulting in better overall airflow conditioning. The engine cover and central bodywork area have also been modified, with the addition of new aerodynamic elements. These changes improve both airflow and local downforce, thus increasing overall efficiency.

The sidepod entrances, as well as the mirrors, have been redesigned to optimize airflow in relation to the new floor geometry. Regarding cooling, specific vents have been introduced for this race to meet the circuit's demanding thermal requirements. These vents allow for increased cooling capacity when needed.

The floor is entirely new, with revised edge geometry. Combined with other improvements, this increases downforce and efficiency in all conditions. At the rear, the floor edge has been modified to better work with the new architecture, thus improving airflow.

Finally, a new rear wing has been introduced. It includes new elements as well as a revised endplate geometry, resulting in an overall gain in aerodynamic downforce and efficiency.

McLaren's upgrades for the Miami GP. Photo: FIA

Red Bull is also changing its entire car

On the side of Milton Keynes Nor have we been idle during the winter. Red Bull introduced a series of developments on its single-seater, aimed mainly at improving aerodynamic downforce and airflow conditioning, while also incorporating some adjustments related to reliability.

At the front, the wing has benefited from a further optimization of its three elements, with revised geometries and endplates that now incorporate the permitted "diveplane," a horizontal fin extending from the outer part of the wing. This evolution generates more downforce while maintaining, or even improving, aerodynamic stability.

The front of the floor has been modified for reliability purposes. The internal body surfaces around the front wheels have been reworked, particularly at the intake and exhaust ducts, to capture air from areas of higher pressure and expel it with minimal disturbance.

At the sidepods, the intake has been adapted to incorporate a new fin at the front of the floor. The geometries of the intake and the mirror mount have been modified. The assembly continues to capture high-pressure air, while the surrounding surfaces have been adjusted to the new floor and engine cowling, generating more downforce while maintaining good downstream flow stability.

Red Bull's upgrades for the Miami GP. Photo: FIA

The engine cover has also been redesigned to accommodate these changes. In conjunction with the floor, it incorporates new cooling outlets and helps improve airflow stability at the rear of the car. The floor features revised geometry, particularly at its front section, to harmonize with the modifications to the front structure and integrate seamlessly with the sidepods and engine cover. This allows for greater aerodynamic performance while maintaining stable airflow.

At the rear, the rear corner has been reworked with revised internal geometry for the rear wheel bodywork and modified suspension fairings. The suspension components have been integrated into the new engine cover and side panels to maintain overall efficiency, while minor adjustments have been made to optimize brake cooling and local load.

Finally, the rear wing was modified at its fixings to adapt the straight-line mode deployment mechanism and to more closely resemble a solution similar to the "Macarena" wing of Classic Ferrari for sale, capable of pivoting on itself at high speed.