Williams FW32 - modified brake ducts

Williams' last update of the season included revised front and rear brake ducts. The front version aims to improve the airflow inside the tyres and direct it to the central section in a more efficient manner (see main drawing). The duct's shape is very similar to the one introduced in Monaco by Force India (see inset), which also influenced ducts used by Renault in Singapore.

Red Bull RB6 - varying brake ducts

Over the last three races, Red Bull have tried out three different brake ducts. At Singapore, the horizontal caliper had a dedicated duct (Singapore drawing - 1) and there was also a small fin (Singapore drawing - 2). At Suzuka, the Singapore duct disappeared and was replaced by a single larger duct (Suzuka drawing - 3). The small fin was also removed for the Suzuka event, but this weekend in Korea it has been included again (Yeongam drawing - 2). There is a single larger duct (Yeongam drawing - 4) and also two new aerodynamic fins (Yeongam drawing - 5), which have been influenced by the Renault.

McLaren MP4-25 - revised front wing

For Korea, McLaren have once again modified the new front wing they introduced in Singapore. This time the new section can be found on the endplate. An additional vertical slot (smaller red arrow) and a vertical gurney flap at the end of the endplate (larger red arrow) have been added to improve airflow outside the front tyres and to gain some more downforce. The inset drawing shows the version the team ran at Suzuka, which featured just two slots and no gurney flap.

Ferrari F10 - modified rear diffuser

In Korea, Ferrari have introduced the biggest evolution to the F10's diffuser since its major update at Spa. The new-look diffuser (main drawing) is visibly different in its central section from its previous incarnation (inset). The top (1) and the bottom (2) profiles are now more curved to improve the extraction of air from the bottom of the car. The side channels now feature just one large middle plate, in place of the older version which was much smaller (3).

Toro Rosso STR05 - F-duct system

In Korea on Friday, Toro Rosso once again ran their F-Duct system, as they had done at Suzuka. It is quite a unique design, with the inlet of the duct separated from the engine cover (see red arrow). More conventional is that the air blows on to the rear wing's main plane (see blue arrow). This follows the example set by Force India from Silverstone, Renault from Spa, Red Bull in Singapore and McLaren, who trialled the different configuration in Suzuka before racing with it in Korea.