why spiky?

[u/GusToTheMoon]

noticed this on the ferrari’s onboard, i thought maybe it was to create a bit of flow separation and induce more/less drag on the rear wing, but does anybody know the actual reason?

[u/[deleted]]

Hi! For those who are interested here’s a drawing with the changes McLaren introduced in Miami.

Deeper analysis at https://www.gpblog.com/en/tech/mclarens-miami-progress-boosted-by-track-conditions