After the GT1 class was dropped from ACO competitions for the 2011 season, the GT2 class was renamed as LM GTE in Europe and as GT in the United States. The new main rivals for the Porsche 911 were the Ferrari 458 Italia, Aston Martin V8 Vantage, Chevrolet Corvette, BMW M3, BMW Z4 (E89) and SRT Viper. Other less successful models in the early 2010s were the Jaguar XKR, Lamborghini Gallardo, Lotus Evora and Ford GT.
Flying Lizard Motorsport's 997 GT3-RSR (997) at the 2008 Utah Grand Prix
In 2021, IMSA announced that the GTLM class would be replaced with a GT3 based GTD pro class.[1] The ACO also announced that GTE in the WEC would also be replaced by GT3 in 2024, with the GTE Pro class seeing its final race in 2022 and the GTE Am class in 2023.[2]
Regulations
Class plates of LM GTE categories
LM GTE Pro
LM GTE Am
The ACO had defined limits and requirements for the LM GTE category to ensure that cars are legitimately production-based. The car must had "an aptitude for sport with 2 doors, 2 or 2+2 seats, opened or closed, which could be used perfectly legally on the open road and available for sale."[3] The ACO modified its regulations for “small manufacturers” (less than 2000 cars produced a year). In order to be eligible, a big manufacturer must produced at least one car a week or a small manufacturer one car a month. The cars were be eligible to race when 100 road cars for big manufacturers or 25 road cars for small manufacturers were produced. The car must had an official launch campaign and sales network. The engine must be used in a production car; while this is usually the engine from the road car, the ACO had made exceptions for cars like the BMW Z4 GTE which use engines from other models. Carbon fiber, titanium and magnesium were banned except for special parts like spoilers or wheels. Cars with carbon cockpits (that are not directly attached to the suspension) were allowed. The engine displacement was limited to 5.5L naturally aspirated or 4.0L turbo/supercharged. The SRT Viper was granted a special waiver to 8.0L. The minimum weight was 1,245 kg including driver, fuel, helmet and liquids. Cars must had working lights and windshield wipers at all times. To distinguish from faster Le Mans Prototypes at night, LM GTE cars must used yellow headlights (not in WEC). Four-wheel drive was banned while engine-based traction control was allowed. Gearboxes were limited to six forward gears. All cars must also had rear-view cameras in addition to side mirrors.
Cars were allowed one set of modifications every two years. Brand new cars were allowed one extra set of modifications in the first year of competition. Small aerodynamic modifications were allowed for Le Mans each year. If the road car was upgraded with a new part, that part could also be used on the LM GTE car through updating the homologation. Manufacturers could also apply for waivers to allow the homologation of cars or parts that would normally be banned by the rules.
Overall, the technical regulations were focused on keeping LM GTE cars relatively close to road cars in terms of parts and dimensions. Aerodynamic devices such as spoilers were heavily regulated. There were also minor requirements that were holdovers from the earlier era of Le Mans, such as requiring at least 150 cubic decimetres of luggage space.
At Le Mans, LM GTE was divided into two classes: GTE-Pro and GTE-Am. GTE-Am cars were must be at least one year old or be built to the previous year's spec, and had limits on the qualification of drivers allowed in the lineup.
The Endurance Committee of the ACO had the absolute right to modify the Balance of Performance between LM GTE cars through adjusting the weight, engine or aerodynamics. Air restrictors were used with default values for specific engine capacities.
2016 updates
At the 2015 24 Hours of Le Mans, the ACO announced a range of changes for the LM GTE class for the 2016 season. The aim of the changes was to increase the performance of the cars relative to the GT3-spec machinery that they compete against in certain series, whilst reducing cost and improving the safety of the cars. The regulations became restrictive, and so there was a reduced reliance on waivers to allow certain cars to compete. One example of this was the increased freedom of aerodynamic development within specific regions of the car.[5] The new cars were able to compete in LM GTE Pro from 2016 alongside the 'old' specification of car, before becoming available for LM GTE Am in 2017. In 2018, the 'old' specification of car was out of competition.
Replacement of GTE Regulations
Autosport magazine reported that on 20 August 2021 that the ACO had announced that they will be dropping the GTE class in favour of GT3 cars from the 2024 season onwards. The GTE class was to remain in place for the 2022 and 2023 WEC seasons, including Le Mans, following the decline of GTE racing with only four cars in the WEC Championship and three in the IMSA SportsCar Championship in 2021.[6]
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