The LMP1 petrol prototypes will be fitted with a bigger fuel filler restrictor (+10mm) in order to reduce the time these cars spend in the pits. The minimum weight of the petrol prototypes has also been lowered by 10kg and they will be able to run larger-diameter air restrictors (+0.3mm). Meanwhile, the diesel LMP1 will have a narrow fuel filler (-3mm), which means that tyre durability is likely to be even more crucial in the case of the diesel cars. The minimum weight of the Peugeot-Oreca has been dropped by 15kg.

In LMP2, the Judd V8 will run a bigger-diameter air restrictor, as was the case with the V6 Honda prior to Spa. The 2011 cars will also have larger diameter fuel fillers (+3.5mm).

In LM GTE, the minimum weight of the Lotus Evora has been reduced by 50kg and the diameter of its air restrictor has been widened by 1.4 mm. The Robertson team’s Ford GT has profited from the same measure (-1.2mm) which means it will run in its ALMS specification.

24 Hours of Le Mans, ACO