What the 2018 Le Mans BoP holds for the GTE classes

This weekend sees the official Le Mans Test day on Sunday 3 June for those teams participating in the 86th running of the famous 24-hour race. The GTE field is one of the largest in several years, thanks to Porsche and Ford both running four cars each in the Pro class, plus Ferrari who will be fielding three cars in this class. We ask what the 2018 Le Mans BoP holds for the GTE classes.

In a return to the days of old when sports cars made up the numbers at Le Mans, the legendary twice-around the clock endurance race promises to be a cracking event. Half of the total field of sixty cars will be made up of GT sports cars, and a third of these will be Porsches. It was fourteen years ago in 2004, that the number of Porsche 911s fielded last ran into double figures, so this will bring back shades of the old days for those Porsche enthusiasts eager to witness a revival of vintage Porsche GT superiority.

In the GTE Am class, Ferrari with five cars, is not even the best represented as that accolade goes to Porsche with a total of six cars, while Aston Martin has just two cars. This year Corvette are not represented in the Am class.

Thursday-Saturday are set aside for driver and team manager administrative checks, scrutineering and driver briefings. The Test day itself is split into two sessions and these are scheduled for 09h00-13h00 and 14h00-18h00, giving a total of eight hours of testing.

The two GTE classes for 2018 are made up as follows:

GTE Pro – 17 cars

Car	No. of cars	Car nos.
Ferrari 488 GTE EVO	3	#51, #52, #71
Porsche 911 RSR	4	#91, #92, #93, #94
Corvette C7.R	2	#63, #64
Ford GT	4	#66, #67, #68, #69
BMW M8 GTE	2	#81, #82
Aston Martin Vantage AMR	2	#95, #97

GTE AM – 13 cars

Car	No. of cars	Car nos.
Ferrari 488 GTE	5	#54, #61, #70, #84, #85
Porsche 911 RSR	6	#56, #86, #77, #80, #88, #99
Aston Martin Vantage	2	#90, #98

Balance of Performance (BoP)

Last year, 2017, we saw the two oldest cars in the field battling it out for the win in GTE Pro, until the Corvette overcooked his brakes on the penultimate lap and let the Ford GT through to finish second. But how did the Aston Martin and the Corvette end up leading the field with the two new cars, the Ford GT and 911 RSR left to eat their dust. This was BoP gone wrong, and evidence of too much fiddling to make things perfect, instead of letting the best car win.

The race authorities are committed to ensuring that there are distinctive lap time gaps between the different classes, and so they have come up with a bespoke set of BoP indexes to make sure this happens. Le Mans is a different race from the rest of the WEC series, and so the results from Spa should have no bearing on the Le Mans BoP calculations. To give you a benchmark against which to compare performance, below is a table comparing key balance of performance factors between the cars in 2017 and 2018 for Le Mans:

GTE Pro 2017	Chassis	2x Air restrictors	Turbo boost	Litres fuel
Porsche 911 RSR	1250kg	30.1mm	–	100
Ferrari 488 GTE	1268kg	–	1.1 @ 7100rpm	91
Ford GT	1268kg	–	1.0 @ 7100rpm	97
Aston Martin Vantage	1193kg	29.8	–	103
Corvette	1243kg	29.5	–	96

(FIAWEC Decision N°: 17-D0032-LMGTE – 16/06/2017)
Notes: Aston Martin – Aero kit ”D” with 7.5mm rear wing gurney mandatory; minimum ride height 50mm

GTE Pro 2018	Chassis	2x Air restrictors	Turbo boost	Litres fuel
Porsche 911 RSR	1259kg	30.3mm	–	101
Ferrari 488 GTE EVO	1291kg	–	1.1 @ 7100rpm	92
Ford GT	1280kg	–	1.0 @ 7100rpm	98
Aston Martin Vantage AMR	1268kg	–	1.2 @ 7300rpm	101
Corvette C7.R	1244kg	29.5	–	96
BMW M8 GTE	1268kg	–	1.1 @ 7100rpm	101

(FIA/WEC Decision N°: 18-D0029-LMGTE – 19/05/2018)

GTE AM 2017	Chassis	2x Air restrictors	Turbo boost	Litres fuel
Porsche 911 RSR	1208kg	29.6mm	–	95
Ferrari 488 GTE	1278kg	–	1.1 @ 7100rpm	90
Aston Martin	1203kg	29.8	–	103
Corvette	1243kg	29.3	–	102

(FIA/WEC Decision N°: 17-D0032-LMGTE – 16/06/2017)
Notes: Aston Martin – Aero kit ”D” with 7.5mm rear wing gurney mandatory; minimum ride height 50mm

GTE AM 2018	Chassis	2x Air restrictors	Turbo boost	Litres fuel
Porsche 911 RSR	1269kg	29.9mm	–	100
Ferrari 488 GTE	1291kg	–	1.1 @ 7100rpm	91
Aston Martin	1263kg	28.8mm	–	100

(FIA/WEC Decision N°: 18-D0029-LMGTE – 19/05/2018)
Notes: Aston Martin – Aero kit ”D” with 7.5mm rear wing gurney mandatory; minimum ride height 50mm
One thing is for certain, the two GTE classes will be action-packed and these will be the classes to watch at the 24 Hours of Le Mans this year. The race proper is just a fortnight after this Test day, and the tension is already starting to build – are you ready?

In the next few weeks in the lead up to the 24-hour race, let us know what your feelings are about the Le Mans BoP that the race authorities are dishing out to the GT players?

Porsche Road & Race will be represented at the Test day once again, and we will be bringing you a summary early next week.
Written by: Glen Smale
Images by: Virtual Motorpix/Glen Smale & John Mountney