Aero Dynamics and Ground Effects - General
All aerodynamic devices must satisfy the following requirements:
T9.2 Location – Front Mounted Devices
T9.2.1 In plan view, no part of any aerodynamic device, wing, under tray or splitter can be:
a. Further forward than 700 mm (27.6 inches) forward of the fronts of the front tires
b. Wider than the outside of the front tires measured at the height of the hubs.
T9.2.2 When viewed from the front of the vehicle, the part of the front wheels/tires that are more than 250 mm (9.8 inches) above ground level must be unobstructed by any part of the aerodynamic device, with the exception of any vertical surfaces (end plates) less than 25 mm in thickness.
NOTE: 9.2.1 and 9.2.2 apply with the wheels in the straight ahead position
T9.3 Location Rear Mounted Devices:
T9.3.1 In plan view, no part of any aerodynamic device, wing, undertray or splitter can be:
a. Further rearward than 250 mm (9.8 inches) rearward of the rear of the rear tires
b. Further forward than a vertical plane through the rearmost portion of the front face of the driver head restraint support, excluding any padding, set (if adjustable) in its fully rearward position (excluding undertrays).
c. Wider than the inside of the rear tires, measured at the height of the hub centerline.
T9.3.2 In side elevation, no part of the rear wing or aerodynamic device (including end-plates) may be higher than 1.2 meters above the ground when measured without a driver in the vehicle