McLaren MP4-25 - rear-wing comparison 14 November 2010
On Friday in Abu Dhabi McLaren carried out back-to-back tests with two rear wings. Hamilton's car featured a new version (bottom illustration), where the air from the F-duct system blows on to the main plane of the rear wing. Button ran with the older high-downforce rear wing, where the air blows on to the rear wing's flap (top illustration). In qualifying and for Sunday's race, both drivers used the newer version of the wing on their cars.