After a series of airborne accidents in sports car racing, such as an accident involving a Porsche 911 GT1 at the 1998 Petit Le Mans and the Mercedes-Benz CLR at the 1999 Le Mans race, the ACO altered the bottom of the LMP1 and LMP2 cars to lower the amount of downforce produced outside of their wheelbase and a reduction in rear overhang coupled with an increase in front overhang for less pitch sensitivity to minimise the possibility of such a crash occurring. The rear wing was moved forward and shortened from to . A plank was added to the underside of all LMP cars to force an increase in ride height and reduce the effectiveness of underfloor aerodynamics.