Prototypes are the ultimate expression of closed-wheel endurance racing - rigid, aerodynamically advanced, and immensely powerful. Built for both speed and strategy, these machines define the cutting edge of motorsport engineering. The emergence of Hypercars and LMdH has revitalized the class, particularly in premier series like the WEC and IMSA. Today, iconic events like the 24 Hours of Le Mans and the 24 Hours of Daytona stand as the flagship showcases of prototype racing.
So, how can you progress toward these elite cars in iRacing? Here's a step-by-step career path to get you there.
Rookie Class – BMW M2 Cup
The BMW M2 Cup, introduced in the December 2024 update, is the most powerful car available at the Rookie level. It’s the ideal entry point into closed-wheel racing. With balanced handling and manageable power, the M2 helps new drivers master essential skills like weight transfer, tire management, and maintaining momentum—key abilities that lay the groundwork for higher classes.
Class D – Ferrari Challenge (Ferrari 296 GT3)
This is where performance ramps up. The Ferrari 296 GT3, developed in collaboration with Oreca, offers a refined chassis and advanced aerodynamics for a GT car. This class introduces drivers to proper throttle and brake control in a more demanding context. You’ll start understanding how to push performance limits without overdriving the car.
Class C – Ligier JS P320 (LMP3)
Welcome to the prototype world. The Ligier JS P320 LMP3 is light (950kg), with a 460hp V8, carbon monocoque chassis, and growing aerodynamic influence. This car is direct and responsive—perfect for honing braking technique and cornering precision. Races include the LMP3 Trophy (LMP3-only) and a multiclass series with GT4 cars. The latter helps you learn traffic management, a key skill in endurance racing.
Class B – Dallara P217 (LMP2)
Time to step up. The LMP2 class, featuring the Dallara P217, brings serious pace: 600hp V8, rigid carbon chassis, and significant downforce. This car demands strong braking control, efficient cornering, and throttle discipline. Tire management becomes more critical here. The Prototype Challenge and IMSA Endurance Series provide valuable experience with multi-class dynamics, including both faster and slower traffic.
Class A – Hypercars and LMdH
This is the top tier. The Acura ARX-06, BMW M Hybrid V8, Cadillac V-Series.R, Porsche 963, and Ferrari 499P are the ultimate expressions of prototype racing. These cars combine high power, complex aerodynamics, and hybrid systems, weighing just over 1000kg. They require precise control over load transfer, braking, and acceleration to maintain tire life and race pace.
These machines shine in endurance events, where strategy, consistency and concentration define success. The IMSA iRacing Series is the flagship competition here, featuring LMH/LMdH, LMP2, and GT3 classes.
What is the best sim setup for Prototype racing?
These cars require fast, precise inputs and excellent brake control. While a clutch pedal isn't essential, having paddle clutches on the wheel is highly recommended for optimal performance. A solid setup would include:
a) ClubSport Steering Wheel Formula 2.5
Climbing the iRacing prototype ladder isn’t just about speed—it’s about learning control, endurance strategy, and traffic awareness. With patience and practice, you’ll be ready to take on the same virtual tracks as the world’s best.
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