iRacing 2025 Season 1 Build Summary
This build includes five new cars:
- NSX GT3 EVO 22
- BMW M2 CSR (FREE content)
- Ferrari 499P
- Supercars Chevrolet Camaro Gen 3
- Supercars Ford Mustang Gen 3
The build also includes two new tracks:
- Huset’s Speedway
- Thruxton Circuit
The historic New Hampshire Motor Speedway has undergone a complete overhaul, transforming it to meet modern standards.
The Test Drive Service has been seamlessly integrated into the iRacing application and is now called Demo Drive.
The debris system has been enhanced to include mud and gravel for a more realistic experience.
The netcode system has been upgraded, significantly reducing issues related to lag.
Additional Improvements
A new violation, “Unsafe Rejoin,” has been added to the Protest Violations list.
The Spotter can now provide more detailed updates about your car’s damage and how it may affect performance. Here’s what’s new:
- Engine Damage: Notifications about power loss levels, from slight to severe or total failure.
- Aerodynamic Damage: Alerts about top speed reduction, downforce loss, and handling impacts like oversteer or understeer.
- Wheel Damage: Information on grip reduction and wheel alignment issues.
These updates are included in new spotter calls and enhancements to existing ones:
- New messages will only be heard if Spotter Chattiness is set to “High.”
- Some existing damage-related messages have been shifted from “High” to “Medium” Chattiness.
- Damage reports now include these new insights when requested.
New Content
Gen 3 Supercars
Two exciting new cars have been introduced, forming the all-new Supercars – Gen 3 class: the Supercars Chevrolet Camaro Gen 3 and the Supercars Ford Mustang Gen 3.
Acura NSX GT3 EVO 22
Building on the success of the original NSX GT3, which debuted in 2017 and claimed numerous wins and an IMSA GTD championship, the Acura NSX GT3 EVO 22 made its mark during the 2022 IMSA WeatherTech SportsCar Championship season. Its debut season concluded with a victory at the Petit Le Mans for Gradient Racing, following its first IMSA podium at Long Beach earlier that year. The EVO 22 also secured multiple wins and championships across other racing series worldwide.
This upgraded model refines its predecessor with enhancements such as re-tuned suspension geometry, improved intercoolers, and revised wheel systems. Powered by Acura’s formidable 3.5-liter twin-turbocharged V6 engine, the car delivers an impressive 520 horsepower.
As a GT3-class vehicle, the NSX GT3 EVO 22 offers adjustable features including traction control, anti-roll bars, and rear wing settings, providing drivers with the tools to optimize performance on the track.
BMW M2 CSR
BMW’s modern racing heritage spans all levels of the sports car racing world, not just the top tiers. Its dedication to supporting track-day enthusiasts and rising amateurs is exemplified by the M2 CSR, a car homologated for TCX class racing and showcased in its own M2 CS Racing Cup series.
Developed through a collaboration between BMW Motorsport and BMW M, the M2 CSR benefits from lessons learned during the creation of the M4 GT4, offering an ideal entry point for aspiring racers. Weighing 3,405 pounds and powered by a 3.0-liter inline-six engine producing 365 horsepower in its Cup variant, the M2 CSR strikes a perfect balance for those seeking something faster than typical entry-level vehicles but not as intense as a GT4 car.
Key features include a fully FIA-approved roll cage, a racing rear wing, a front splitter, and a specially tuned ABS system, making it a powerful and safe platform for developing future racing stars.
Huset’s Speedway
Named after farmer and businessman Til Huset, Huset’s Speedway was built in 1953 on former farmland—a soybean field—and opened the following year. Like many of America’s premier dirt ovals, it quickly became a hub for top-tier motorsport, hosting renowned national series such as the World of Outlaws Sprint Car Series.
In the mid-2010s, the track briefly operated as Badlands Motor Speedway before closing. In 2020, Tod Quiring stepped in to rescue the historic venue, swiftly restoring it as a premier destination for top-level sprint car racing.
Measuring 1/3 mile with high banks, Huset’s Speedway is a thrilling bullring that runs weekly and national-level events through Labor Day weekend. Highlighting its schedule are prestigious races like the Huset’s High Bank Nationals and the Huset’s Hustle, which offer six-figure payouts to sprint car winners, and the Silver Dollar Nationals, awarding $75,000 to the victor in late model competition.
Quiring’s dedication to the track’s legacy extends beyond its events—he proudly showcases the Huset’s brand on his Big Game Motorsports 410 Sprint Car, which competes in the World of Outlaws national tour. Partnering with driver David Gravel, the team has celebrated dozens of victories in recent seasons, solidifying Huset’s Speedway as a cornerstone of American dirt racing.
Thruxton Circuit
Thruxton Circuit in Hampshire, England, has roots dating back to 1950 when the former RAF Thruxton airfield, a key base for Allied operations during World War II, was repurposed for motorcycle racing. The main circuit was established in 1968, following the perimeter roads of the airfield, and has since become a staple of British motorsport.
Known as “The Fastest Circuit in the UK,” Thruxton hosts major events each summer, including the British Touring Car Championship, the British Superbike Championship, the F4 British Championship, and TCR UK. Its 3.793 km (2.356 mile) layout features 12 sweeping turns, favoring high-speed precision over sharp braking zones.
While most races see lap times exceeding a minute, the circuit’s design allows for incredible speeds in higher-class vehicles. The unofficial track record, set by Damon Hill in 1993, stands at a blistering 57.6 seconds in a Williams FW15C Formula 1 car, with an average speed of over 147 mph. Thruxton remains a thrilling venue where history and high-speed racing converge.
This is a big update, and I’m really excited about some of the new content and improvements—I’m sure you are too! Be sure to join me after the build release for a new content video on the OSR YouTube Channel.
The iRacing 2023 Season 4 update has arrived. This release comes with an abundance of new content and upgrades for 2023 Season 4. The iRacing garage is expanding with the addition of FIVE new additions, which include the Acura ARX-06 GTP, Ferrari 296 GT3, NASCAR Classic Pontiac Grand Prix – 1987, Porsche 963 GTP, and Super Formula SF23. Furthermore, the iRacing map is proudly waving TWO new flags and providing a highly-anticipated update to a third one. This includes the introduction of Circuit de Lédenon, Kern County Raceway Park (featuring Asphalt Track, Dirt Track, Legends, and Dirt Mini Oval), and a complete rebuild of Circuit Zandvoort using 2023 data, featuring Grand Prix, Grand Prix with Chicane, Nationaal, and Oostelijk layouts.