The Balance of Performance for the GTE Pro field ahead of the Le Mans 24 Hours has been adjusted, with the full numbers being released today.
It’s a mixed bag of changes, in part designed to ensure that the cars complete no more than a mandated 14 laps maximum from the second stint in the race, but also to equalize the performance of the cars.
Of the six cars in the field, the only car that remains untouched is the Porsche 911 RSR, which ran fastest at the Test Day.
On the other end of the spectrum is the Aston Martin Vantage AMR, which has seen the biggest change to counteract the new car’s lack of pace at both Spa and the Test Day. Aston Martin Racing has received a 4-liter increase in fuel capacity and an increase in turbo boost across the rev range.
The Ford GT, meanwhile, has been handed a reduction in both running weight and in maximum fuel capacity, plus marginal reductions in turbo boost pressure across the rev range.
MTEK’s BMW M8 GTEs have also seen a small change, an increase in weight, a reduction in fuel capacity, but increases in turbo boost across the rev range.
The Corvettes and Ferraris, too, have been handed marginal changes, the C7.Rs handed an extra 10kg, and the Ferraris getting a turbo boost pressure break.
In GTE Am the only adjustment was a small reduction of maximum fuel capacity for the older generation Aston Martin.
It’s worth noting that this may not be the final BoP change of the week, as the values can be readjusted at any point before the start of the race.
LMP1 EoT values for Le Mans
In addition to the BoP changes in the GTE ranks made today, the Equivalence of Technology values for the LMP1 class ahead of the Le Mans 24 Hours were also been released. There have been some changes made, but only to the non-hybrid LMP1 cars, and once again there is no difference applied between the turbocharged and normally aspirated cars.
The 2018 cars will have a marginally increased level of fuel energy per lap (205 MJ/lap compared to 204.4), but decreased levels in both max fuel per stint (52.5 kg down from 53.2kg) and maximum fuel flow, 108 kilos per hour down from 115k kg/hour last year.
At the top end of the field, the hybrid-powered Toyotas will retain their one lap per stint efficiency advantage, even with these changes.