The regulations for 2021 introduced several small changes to the cars. The most significant is the narrowing of the chassis floor, which has the effect of reducing the inherent ground effect at the backend of the car. Consequently reducing effective downforce significantly. Every team has presented a new car with all sorts of gizmo to recover the lost downforce at the rear. The question really is, which chassis platform sufferers the most from the narrower floor? Do the rake cars benefit or suffer more than flat cars like the Mercedes?
I guess we shall find out at winter testing, which runs from March 12th to 14th. Is the narrow floor enough to cause a brawn effect with one car suddenly storming ahead of the familiar front runners?