McLaren MP4-23 - revised rear wing 01 November 2008
For the final race of the season in Brazil, McLaren have introduced a completely new rear wing. The flap has two outer extensions, which jut out to the main profile's entry edge (see inset and green arrow). Each triangular protrusion partially covers the main profile, thereby creating a channel for the airflow. In comparison to the previous version, the distance between the main profile and flap has been increased to generate higher pressure not just around the extensions but over the entire wing. The change allows the angle of the flap to be reduced so as to boost the car's performance at top speeds, whilst maintaining efficient levels of downforce through the slower sections of the anti-clockwise Interlagos circuit.