Information /

Le Mans 24 Hr Cars

The Types (WEC)

HYBRID P1

LMP1

"LE MANS" PROTOTYPE 1 category includes:
  • "LE MANS" PROTOTYPE 1 Hybrid: with Energy Recovery System (ERS).
  • "LE MANS" PROTOTYPE 1 : with no Energy Recovery System (ERS) reserved for privateers.

The LMP1 Private Teams category is reserved exclusively for independent private teams. A team that is independent of a manufacturer means a team that does not benefit from any support from a manufacturer other than for the single supply of engines, services relating to these engines or commercial support. Any support from a manufacturer relating to the chassis or to chassis systems is prohibited. It is understood that traction control is considered as a chassis system.

Engines

Engine is free except following restrictions:

  • Only Petrol or Diesel 4 stroke engines with reciprocating pistons are permitted.
  • Engine cubic capacity is free for "LM" P1-Hybrid cars
  • Engine cubic capacity must not exceed 5500 cm3 for "LM" P1 cars.

Number panels

Pantone red 485, with white numbers

Driver Categories

Bronze drivers are not permitted

Minimum weight

878 kg for LMP1-Hybrid
833 kg for LMP1

Dimensions:

  • Wheelbase: Free but it must be identical to that registered in the Homologation Form
  • Overall length: 4650 mm maximum
  • The front overhang is limited to 1000 mm
  • The rear overhang is limited to 750 mm
  • Overall width: 1900 mm maximum and 1800mm minimum
  • Height: No part of the bodywork is permitted to be more than 1050 mm above the reference surface

Fuel Flow Metering:

A homologated "Fuel Flow Meters" sensor must be fitted which directly measures the fuel flow through the fuel feed line to the engine. By measuring the instantaneous
flow the total fuel consumption can be calculated. The LMP1 will be constrained on both: fuel energy per lap and maximum instantaneous fuel flow.

Fuel Tank Capacity:

Petrol 62.3 litres with ERS, 75 litres with no ERS
Diesel 50.1 litres with ERS

Fuel Energy per Lap:

The fuel energy per lap is the total amount of fuel energy contained in the fuel mass allocated for one lap.

Technology Factor:

The Fuel Technology Factor is a function of the ratio of Diesel over Petrol engine efficiencies.
The K Technology Factor is a function of Diesel and Gasoline powertrain weight and ERS options.
Those factors are used to calculate the relation between diesel and gasoline allocated energy and maximum instantaneous flow.

Maximum instantaneous fluel flow:

The fuel flow is limited instantaneously and therefore limits the maximumengine power.


P2 LMP2

"LE MANS" PROTOTYPE 2 ("LM" P2) is a racing car with no production minimum required.
It is an open or closed car, destined only to teams independent of manufacturers and/or engine suppliers.

The selling price of the complete new open cockpit car, without the engine, as described in Article 5.6.1 but with all available options must not exceed €388.500. For closed cars, the selling price must not exceed €463.500.

Engines

Engine Homologated (see Article 5.1)

  • Cylinder capacity: 4.2-litre V8 without direct-injection producing 600bhp.

Number panels

Pantone blue 653, with white numbers.

Driver Categories

A crew of 2 or 3 drivers must include at least one Silver or Bronze driver.

Minimum weight

930 kg.

Fuel Tank Capacity

75 Litres

Dimensions:

  • Wheelbase: Free but it must be identical to that registered in the Homologation Form.
  • Overall length: 4750 mm maximum (rear wing included)
  • Overall width: 1900 mm maximum
  • Height: No part of the bodywork is permitted to be more than 1050 mm above the reference surface (See Article 3.5.1)
  • The front overhang is limited to 1000 mm.
  • The rear overhang is limited to 750 mm (including the rear wing).

P2 P2 LMP2 LMP2

The "Le Mans" Grand Touring Endurance car ("LM" GTE) is a car having an aptitude for sport with 2 doors, 2 or 2+2 seats, opened or closed, which can be used perfectly legally on the open road and available for sale thanks to the dealer network of a manufacturer recognised by the Endurance Committee.

This category includes two groups:

  • A group destined more especially to professional (LMGTE-PRO).
  • A group destined more specially to amateurs drivers (LMGTE-AM).

Engines

Normally aspirated engines: 5500 cc maximum
Turbocharged / Supercharged engines: 4000 cc maximum.

Driver categories

LMGTE-Pro: The composition of the crews is free.
LMGTE-Am: A crew of 2 or 3 drivers must include at least 1 Bronze plus 1 Bronze or Silver LMP1.

Dimensions

Maximum dimensions:

  • Overall length: 4800 mm
  • Front overhang: 1250 mm
  • Rear overhang: 1100 mm
  • Overall width: 2050 mm (excluding rear view mirrors)

Number panels

LMGTE-Pro: Pantone green 355, with white numbers.
LMGTE-Am: Pantone orange 021C, with white numbers.

Minimum weight

1245 kg (weight of the car without driver, fuel or fluids on board). The Endurance Committee reserves the right to adjust the minimum weight of any car in order to maintain the Balance of Performance between the cars.

Fuel Tank Capacity

90 litres (subject to Balance of Performance adjustments)

Courtesy of WEC

The Types (IMSA)

P

P

PROTOTYPE (P) category:

The Prototype (P) class features the fastest and most technologically advanced cars in North America. They are specifically designed and engineered for the race track and look drastically different than a typical street car.

SUMMARY

TOP SPEED: 200 mph

HORSEPOWER: 600

WHEELBASE: Length varies; based on production vehicle design

WEIGHT: 2,046 lbs/930 kg

HEIGHT: Height varies; based on production vehicle design

WIDTH: 74 inches

CARS: Mazda DPi, Cadillac DPi, Nissan DPi, Ligier LM P2, Multimatic Riley LM P2, Oreca LM P2, Dallara LM P2

ENGINES: Gibson V8, Mazda 4 cylinder turbo, Cadillac 6.2L V8, Nissan V6 Turbo

FUEL: E-20

GEARBOX: 6-speed paddle shift

TIRES: Continental

CHASSIS: Carbon fiber monocoque

SUSPENSION: Front and rear - independent coil springs, upper and lower A arms

TRACTION CONTROL: Permitted


PC LMP2

"LE MANS" PROTOTYPE CHALLENGE ("LM" PC) category: The Prototype Challenge (PC) class is a spec class featuring open-cockpit race cars and technology such as a carbon fiber chassis, carbon brakes and sequential gearbox.

SUMMARY

TOP SPEED: 185 mph

HORSEPOWER: 485

WHEELBASE: Length varies; based on production vehicle design

WEIGHT: 2,002 lbs/910 kg

HEIGHT: 40 inches

WIDTH: 74 inches

CARS: ORECA FLM09

ENGINES: Chevrolet LS3

FUEL: VP Racing Fuel E-10

GEARBOX: Xtrac sequential with paddle shifting

TIRES: Continental

CHASSIS: Carbon Fiber

SUSPENSION: Front and rear - independent coil springs, upper and lower A arms

TRACTION CONTROL: Permitted


P2 LMP2

"GT LE MANS" (GTLM) category: The GT Le Mans (GTLM) cars are the most elite and fastest GT cars on the track. They are based on production models and are engineered to extract the maximum performance possible. The class serves as a true proving ground for leading manufacturers such as BMW, Corvette, Ferrari, Ford, and Porsche.

SUMMARY

TOP SPEED: 180

HORSEPOWER: 500

WHEELBASE: Length varies; based on production vehicle design

WEIGHT: 2,745 minimum

HEIGHT: Height varies; based on production vehicle design

WIDTH: 79 inches

CARS: Aston Martin Vantage V8, BMW M6 GTLM, Corvette C7.R GTE, Ferarri 488 GTE, Ford GT GTE, Porsche 911 RSR GTE

ENGINES: Aston Martin V8, BMW V8 Turbo, 5.5-liter Chevrolet pushrod 2-valve, Ferrari V8 Turbo, Ford EcoBoost Turbo, Porsche flat 6

FUEL: VP Racing Fuel E-20C

GEARBOX: 5-speed or 6-speed

TIRES: Open (Michelin currently participating)

CHASSIS: Steel tubing and integral roll cage or production tube with cage, based on production model available to the public

SUSPENSION: Front and rear - independent coil springs, upper and lower A arms

TRACTION CONTROL: Permitted


GT3 GT3

"GT DAYTONA" (GTD category: The GT Daytona cars are enhanced (not defined by) technology. They are also based on production model cars but do not feature the same level of aerodynamics and power as the GTLM class cars. The GTD class consists FIA GT3-spec cars.

SUMMARY

TOP SPEED: 180

HORSEPOWER: >500

WHEELBASE: Length varies; based on production vehicle design

WEIGHT: 2,680 pounds

HEIGHT: Height varies; based on production vehicle design

WIDTH: 79 inches

CARS: Acura NSX GT3, Aston Martin Vantage GT3, Audi R8 LMS GT3, BMW M6 GT3, Ferrari 488 GT3, Lamborghini Huracan GT3, Lexus RF GT3, Mercedes AMG-GT3, Nissan GT3-R, Porsche 911 GT3-R

ENGINES: Acura V6 Turbo, Aston Martin V12, Audi 5.2-liter V10, BMW V8 Turbo, Ferrari V8 Turbo, Lamborghini 5.2-liter V10, Lexus 5.0-liter V8, Mercedes 6.2-liter V8, Porsche 4.0-liter flat 6

FUEL: VP Racing Fuel E-10

GEARBOX: 6-speed

TIRES: Continental

CHASSIS: Steel tubing with integral roll cage or production tube with cage; based on production model available to public

SUSPENSION: Front and rear - independent coil springs, upper and lower A arms

TRACTION CONTROL: Permitted

ABS: Permitted


Pro (Red) & Pro-Am (Green)

The Pro classes typically feature a professional driver line up while the Pro-Am classes pair a professional driver and amateur driver.

To help fans easily identify a class of car, the IMSA WeatherTech SportsCar Championship implemented a new color system. A Pro class is designated by RED markings on the number panel, mirror, windscreen banner, rear wing end plate, class decal, and leader light.

A Pro-Am class is designated by GREEN markings on the number panel, mirror, windscreen banner, rear wing end plate, class decal, and leader light.

Leader Light System

To help fans follow the on track action, the IMSA WeatherTech SportsCar Championship uses a Leader Light System. It allows fans to easily identify the position of each car in its respective class. The position of the car is displayed on an LED panel mounted on the side of the car.

The color of the LED number corresponds with the red (Pro) and green (Pro-Am) colors utilized in both the Prototype and GT style of cars. For instance, an illuminated red number 5 LED on a GTLM style car means that car is in 5th position in the GTLM class.

Courtesy of IMSA