With the recent unveil of the BoP measures at the upcoming 24 Hours of Le Mans Test Day, Last Lap thought to summarise the key details.

The Automobile Club l’Ouest and the FIA have worked together to establish a Balance of Performance (BoP) system in the new Hypercar category of the WEC.

It adjusts the weight and power of a car through the fiddling of weight ballasts and fuel-flow rate.

Ahead of the class debut at the Le Mans test day on 15 August, the measures remain almost the same since it was adjusted before the 8 Hours of Portimao, two races ago.

As per usual, aside from Hypercars, GTE-Pro and the GTE-Am classes both have BoP measures to keep the competition as close as possible.


Alpine Elf Matmut’s A480 Gibson will be the sole Hypercar to face any changes since the measures were last set ahead of the 8 Hours of Portimao.

Its maximum power per stint has been reduced by 74 MJ, from 965 MJ to 844 MJ.

The grandfathered Rebellion R13 may run at 952 Kg and 603 hp, but it still uses the developed low-downforce aero kit used at the 2020 race.

No changes have been made for the championship leaders Toyota GAZOO Racing and their GR010 Hybrid.

Their weight remains at 1066 kg (6H Spa originally at 1044 kg) for an energy per stint allowance of 962 MJ and a maximum power output of 690 hp.

As for the two Glickenhaus Racing Hypercars, their 007 LMHs will face no changes either with 1030 kg, 965 MJ and 697 hp.

GTE-Pro and Am

In the works category, the Ferrari 488 GTE will be at 1269 kg with a maximum fuel load of 94L.

The Corvette C8R will make its Le Mans debut after missing out on the opportunity last year, the second European appearance since the 6 Hours of Spa.

The two cars will be at 1276 kg with 99L maximum fuel capacity.

The Porsche 911 RSR used by the two works cars, WeatherTech Racing, and Hub Auto Racing will be at 1285 kg and 99L.

In the Am proceedings, the 488 GTE will be at 1279 kg and 91L, whilst the Porsche 911 RSR will be at 1295 kg and 96L, and the Aston Martin Vantage GTE at 1257 kg and 93L.

Credit: © ADRENALMEDIA.COM / Gabi Tomescu

At the 6 Hours of Spa, the Alpine struggled in race pace which added to running their smaller fuel tank in comparison to the homologated Hypercars.

The ex-LMP1 can only run a maximum of 75L whereas the Toyota has 90L.

At the following Portimao and Monza rounds, the French team have been able to find more capable pace but were still bound to make at least one extra scheduled stop.

READ MORE: Looking at the 24 Hours of Le Mans entry list

Such a factor diminished their winning chances at the Portugal race due to a late safety car period.

At Le Mans, they will have the tailored aero kit plus a package that has ultimately raced at the circuit before though not in the hands of the Alpine team.

This fuel tank deficit will be on their minds to take advantage of any reliability woes rivals Toyota and Glickenhaus will experience in the endurance classic on 21/22 August.

Leave a Reply