World Sports Car 2025
With Hypercar and GT3 in full swing as the defacto standards for both IMSA and WEC, the fields are burgeoning with manufacturer representation and sportscar racing has truly entered its second golden age (some might say "platinum" age).
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For the first time since SGS has been developing modern sportscar mods, the WSC pack is now, 100% original content. No longer does the team have to rely on Studio 397 content and compromise car development to match 1st party performance or requiring users to own paid content to experience the entire collection.
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Thanks to the tireless work of Storm Gang Simulation and our many partners, you can now experience premier endurance racing completely in simulation. All 10 Hypercars (including the new Aston Martin Valkyrie) and all 10 GT3s have been meticulously developed through the Smart BOP process, allowing for uniquely performing vehicles that all have a shot at the top spot.
Special thanks to contributors:​​
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Additional credits to:
Optical Dream Soft (Slava Oleksii!)
Hably Rizqi
DSG Studio
Classic Motorsports Hub
JM Tracks
Brian van Beusekom (BrianB)
Alec King, Jamie Zolecki, Vasilis Katerinakis, Matthew Overton
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rFactor 2 mod to be released to Steam Workshop Q1 2026. Visit our partner, Champion Motorsport to try it today.
HYPERCAR
The top tier of sportscar racing. Hybrid battery power & internal combustion engines run these beasts. SGS mimics the torque curves of the hybrid units to create realistic outputs. Tires take a couple laps to come up to temperature just like the real thing. No ABS but there are ARBs to adjust alongside 3rd springs and aero options. Cars can be AWD or RWD and have a single adjustable aero element either at the front or rear.
Acura ARX-06 LMDh
What started in the 90's as Honda's first entry into IMSA's GTP prototype racing, has grown into a dominating force that has fought ferociously for podiums through the decades. The success saw future iterations run in IMSA, FIA events and at Le Mans for over 80 wins.
The ARX-06 leaves behind the DPi regulations for the new LMDh specs, featuring a 40 kW (50 HP) hybrid unit and a screaming, 6-cylinder, 670 HP engine influenced by future IndyCar programs. The custom bodywork by HPD Design takes strong cues from the previous ARX-05, including the slasher headlights and double front wing, sitting on a VERY stiff Oreca chassis. The Acura has been a hallmark of IMSA with Le Mans intentions.
Alpine A424 LMDh
Peugeot isn’t the only manufacturer hitting the track from France. With a robust racing history, Alpine has stepped into the ring with their LMDh effort. One of the first manufacturers running solely in WEC with the IMSA-style chassis, The A424 struggled at first but started to show promise early on.
Taking their experience from the LMP era, they developed a design on the Oreca platform with strikingly similar cues to the Acura ARX-06. The RWD Mechachrome-powered , turbo 3.4L V6 RWD layout has put its rivals on alert.
Aston Martin Valkyrie LMH
The return of the British marquee to top line sportscar has been one of the most anticipated events in endurance racing this era and based on sights and sounds alone, they did not disappoint.
The crown jewel of the car is the 7.0L Naturally Aspirated screaming V12. Possibly the last unicorn of sanctioned sportscar racing. Much like in real life, the car is strong but torquey. A good balance of chassis and aero, along with a light touch are required to successfully navigate this machine to victory.
BMW M Hybrid V8 LMDh
The Bavarian manufacturer makes a strong return to top level sportscar racing after a 20+ year hiatus. The LM V12 was the first foray into prototype racing back in 1998 and was an initial disaster. The LM was practically abandoned mid-season for its successor. the LMR V12, which would go on to take the 1999 Le Mans race in dominant fashion.
Then, BMW disappeared from prototypes, staying focused on touring and GT motorsport predominantly. But that has changed with the advent of new Hypercar regulations. Surprisingly, the Germans went for the IMSA LMDh instead of WEC's LMH ruleset, likely due to cost savings. So, the thrumming V8 stuffed in a Dallara chassis, and its infamous gaping nostrils have been slow out of the gate but have started showing more success as the program matured.
Cadillac V-LMDh
General Motors has been a stalwart competitor both regionally in the USA and across the world. The GTE program had a tearful departure where the C8 said its last goodbye at a bitter 2022 Bahrain round, while the upcoming GT3 spec version will take its place. On the prototype side, the very powerful DPi-V.R has waged war in IMSA over the last years. The 2022 season saw an epic struggle between their sole, remaining rival, Acura, who edged them out on the farewell tour for the car and specification.
Cadillac was not modest with the reveal of their Hypercar concept which saw elegant, transparent bodywork on the wing and striking aero design that singled the car out as a serious threat in both design and function. While the aesthetics were trimmed back for the race-ready version, the booming V8 roar and strong presence on track are ever present. GM has been very successful in IMSA while its WEC program struggles with numerous race incidents keeping it from better finishes.
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Just like the real car, the Caddy is compliant and has a strong top end.
Ferrari 499P LMH
No other manufacturer can say they have a history like Ferrari's. Whether you're a tifoso or you hate the brand, Ferrari demands the respect of motor enthusiasts around the world and it's no surprise that they turned heads when they announced their return to official prototype racing after 50 years.
Using the LMH spec, Ferrari debuted their car (fashionably late) and easily stood out as the most elegant of all recent hypercars. Interestingly, it shares the same twin turbo, V6 engine with its GT3 counterpart. The 499P has a semi-permanent all-wheel drive, with an electric motor situated at the front axle, providing 200 kW (272 PS; 268 hp) above 120 km/h (75 mph) (as stipulated by the regulations), and is connected to a bespoke 900 V battery pack, with the ability to be recharged by Ferrari's own Energy Recovery System (ERS).
Their immediate success at Le Mans has inspired the teams to push for overall victory in the WEC championship.
Lamborghini SC63 LMDh
Ferrari’s hated cousin came to the show with the sharp, angular lines reminiscent of their modern design aesthetics and an appetite for runs in both WEC and IMSA.
The RWD layout driven by 2.6L Twin Turbo V8 has shown the car has pace in both series. However, over the first two years in competition, it was obvious that the car needed more development. As the teams cut back and focus on IMSA, the car’s future would hang in the balance as the teams struggled to exploit the car’s potential.
Peugeot 9x8 LMH Evo
The wingless wonder made winged. After WEC changed the speed at which teams could deploy FWD power for AWD platforms, the car was left nerfed from one of the few advantages it was designed to have. With it no longer able to capitalize on a low drag layout to maximize Le Mans performance, Peugeot engineers used every last joker to craft the 9x8 Evo in an attempt to salvage their car from being scrapped.
The AWD format has some unique pros and cons for the 2.6L Twin Turbo V6 beast. The French manufacturer has had very limited success on the grand stage thanks to reliability issues and altered regs. In this pack, the car is a bit more competitive but AWD still means understeer will make setup crucial to success.
Porsche 963 LMDh
Porsche is the peanut butter to Ferrari's jelly. The two are iconic juggernauts in endurance racing and motorsport in general. The rivalry is older and more prominent than Enzo's spat with Ford. And bigger than the arm-wrestling Porsche did with Mercedes in the 90's. When Ferrari said they wanted revenge for the beating they took in the 70's, Porsche dinged the bell for round 2.
Leaning full into the heritage of GTP and Group C racing of the 80's (956 & 962), the 963 was developed on the Multimatic chassis for IMSA's LMDh spec. Its own twin turbo V8 blasts the svelte prototype around and it’s been an absolute powerhouse in both IMSA and WEC since its premier.
Toyota GR010 LMH Evo
The sole manufacturer to see LMP1 run its course and one of the first to join the LMH club, Toyota has shown that they are a racing brand. While they may not have some of the same, glorious history in world sportscar racing as others in this list, they absolutely know how to win and never quit.
Since the inception of Hypercar rules, Toyota was ready to go toe to toe with everyone from Aston Martin to Glickenhaus and beyond. The GR010 dominated the WEC before more manufacturers began showing up. But even as the juggernauts of Ferrari, Porsche and Cadillac appeared, Toyota showed that they were ready and fully prepared to go to war. Even when hit with some of the heaviest BOP in WEC, they still manage to keep their rivals in check.
GT
The extremely popular, accessible and wildly successful GTD and LMGT3 platforms draw plenty of drivers into its ranks. With ABS and a tightly controlled BOP formula, no other motorsport discipline has brought such a consistently competitive platform. GT3 started, in 2005 making it the longest running regulation set in sportscar racing. Only two tires (Medium Slicks and Wets) mean drivers have to manage wear and fuel usage to maintain an even pace.
Aston Martin Vantage Evo GT3
A British classic! The Vantage has proven reliable and very potent among a packed gride of GT3s. Well balanced and easy on the tires, the Aston Martin draws several different drivers to its very adaptable and easy-to-handle platform.
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While a little down on power at only 535 HP from its 4.0L Twin Turbo V8, the somewhat lighter 1335 kg model is more than capable of carrying speed through corners.
BMW M4 Evo GT3
Storm Gang had the distinct honor of producing the first version of the Evo in any simulator, showcasing the new headlights and tail lights, along with a more balanced driving configuration. WRT and Turner have made BMW their home for a while and have had very successful runs with the German flagship.
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While you'd think pushing the slightly heavier package (1375 kg) around would be a challenge, the 4.4L Twin Turbo V8 cranks out a more than adequate 569 HP with a high redline and plenty of oomf to haul down the straights.
Chevrolet Corvette Z06 GT3.R
After much anticipation, Chevy finally releases its much anticipated GT3 program and the customer teams have been immediately successful out of the gate in both WEC and IMSA.
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Carrying on the C8's mid-rear mounted, 5.5L NA V8, it's fast in and out of the corners and very comfortable to drive.
Ferrari 296 GT3
Ferrari introduced a refreshed model to its GT3 roster, replacing the aging, yet successful, 488. The 296 entered the field with a very unique approach to GT3 construction. The car is designed to easily be pulled apart down to its components, able to be completely replaced within 15 minutes. And even more interesting, the GT3 shares the same power plant as its contemporary Hypercar brother, the 499P.
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With its refined aero, and 550 HP 2.9L Twin Turbo V6, the aggressive looking 296 has very quickly earned its place among the ranks, taking victories at the 24 Hours of Nordschleife and elsewhere.
Ford Mustang GT3
Ford finally revealed their GT3 to debut in WEC and IMSA for 2024. Their last pony car carries on the Ford Performance legacy with Joey Hand helping oversee the car's production, After some flopped attempts to add the Mustang to the class between 2007-2011 and killing off the Ford GT GTE program in 2019, this resurgence sees the Mustang come back hard and fast with a thundering, 500 HP V8 and an incredible 50/50 split in a front engine layout.
Lamborghini Huracan Evo 2 GT3
Lamborghini has an incredibly strong showing in GT3 and GTD around the world. The Italian marquee is one of the most visually radical designs, maintaining the age-old wedge shape. The Evo 2 has taken visual cues from the Super Trofeo version of the car, which was the basis for the 2022 car. Historically, The GT3 Evo’s follow the Super Trofeo versions from the previous generation with some other enhancements. While equipped with a 5.2L NA V10, the Huracan is actually on the light side, at around 1230kg and a popular choice for pros and ams alike.
Lexus RC F GT3
The Lexus RC F GT3 made its debut in the GT Daytona (GTD) class of the IMSA WeatherTech SportsCar Championship at the 2017 Rolex 24 at Daytona. It has taken several class victories and poles through its lifetime, allowing Toyota’s luxury brand to stand shoulder to shoulder with their Japanese rival, Honda/Acura. While support is being pulled in Europe, the US program is still very strong as well as privateer programs. The weight is maxed at 1300kg and the car is powered by a powerful 5.4L V8 pumping out 500 HP.
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This is the final year of the RC-F as Toyota (under the Lexus badge) moves to the new GR sportscar.
McLaren 720S Evo GT3
While a little older, the 720S has gone through some updates to improve performance inside and out. The 4.0L Twin Turbo V8 powers the slightly heavier but very well balanced stalwart.
Very responsive to setup changes and compliant to a fault, the only thing holding this car back from pure domination is its somewhat lower punch out of corners.
Mercedes AMG Evo GT3
Mercedes has had a bumpy ride with WEC as the transition to GT3 took place. Since WEC wanted to see manufacturers support both a Hypercar AND GT3 program (or at least Hypercar) AMG was temporarily booted from the WEC roster. With a strong presence in IMSA and other regional GT3 series, they were able to get back into WEC with the intention of bringing a Hypercar in the future...maybe.
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While beginning to show its age a little, the Evo version brings a whole new front facia that delivers some very aggressive looks along with a bigger wing and other small adjustments. The 6.2L NA V8 is by far the largest and engine on the grid. Strong and guttural, the AMG can prove to be quite nimble with its lower weight and rearward pressure.
Porsche 911 (992) GT3
Porsche came to the game with its successful 911 format. Coming into 2023, the newest iteration a la the 992 was...mediocre. But after some development and push for BOP updates, the 992 became a powerhouse. The 4.0L NA Flat-6 is at home in the car's bumper, giving it the classic German balance.
No series is complete without Porsche, and for those who can tame the quirky characteristics through setup and driving style, the 992 will be an absolutely hero.