European Le Mans Series

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Rules - Four categories

Rules 2012

The cars competing in the Le Mans 24 Hours are divided into 4 categories: LM P1 and LM P2 prototypes and LM GTE Grand Touring Cars. The first 2 categories represent the quickest cars. GT cars must be approved road-going vehicles of which at least 100 have been built and commercialised (25 in the case of small manufacturers). The field is divided into two categories: Am & Pro.
In 2012, European Le Mans Series allows only LM P2, GTE Am and GTE Pro, and also Formula Le Mans cars, prototype firstly buid as an one-make series by Oreca, and GTC, new category with GT cars from one-make series.

Air restrictors play an important role in the technical regulations. These are fitted in the inlet manifolds of all cars to balance out power, and their diameters vary according to the engine's architecture, type of fuel feed and type of fuel for the Prototypes and the weight for the Grand Touring cars.

Dimensions

	LM P2	LM GT1	LM GT2
	Opened or closed cars.	Opened or closed car two doors Having an aptitude for sport.
Overall lenght	4650 mm	Origin	Origin
Wheelbase	Free	Origin	Origin
Overall width	2000 mm	Origin +150 mm	Origin + 100 mm
Overall heigth	1030 mm	Origin	Origin
Front overhang	1000 mm	Origin + 80 mm	Origin
Rear overhang	750 mm	Origin	Origin

Engine

	LM P2	LM GT1	LM GT2
Max cylinder (in cm3)	Race engine: 3400 petrol atmo/ 8 cyl. maxi 2000 petrol turbo/ 6 cyl. maxi Production engine: 4500 petrol atmo (homologated) 4400 diesel (origin series)	Cylindrée mini : 5000 petrol atmo 3000 petrol turbo	Cylindrée maxi : 5500 petrol atmo 3200 petrol turbo

Transmission

	LM P2	LM GT1	LM GT2
Gearbox Drive train	6 forward ratios maxi + reverse gear Four wheel drive prohibited

Brakes

	LM P2	LM GT1	LM GT2
Discs (material)	Free	Free	Ferrous
Discs (diameter)	15'' (380 mm)	15'' (380 mm)
Brakes callipers	Only one calliper with 6 pistons per wheel

Wheels

	LM P2	LM GT1	LM GT2
Overall width	14''	14''	12'' up de 1245 kg 14'' over de 1245 kg
Diameter	28''	28''	28''

Minimum weight

	LM P2	LM GT1	LM GT2
	825 kg	560 cv -> 1200 kg 600 cv -> 1250 kg	1145 kg

Carburant

	LM P2	LM GT1	LM GT2
Fuel tank capacity:
Petrol	80 litres	90 litres	90 litres
Gazole

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