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rFactor 2 News

rFactor 2’s GT3 cars get BoP’d

7 minute read

By Traxion

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Developers of the rFactor 2 simulation, Studio 397, have today revealed a new balance of performance (BoP) for their GT3 roster. The collection of GT3 spec cars now spans 13 unique cars (okay, in fairness, there are two Bentley Continentals), which is an incredibly impressive list but keeping the balance of each car in shape is quite the challenge.

Balance of Performance is important for competitive racing in sportscars. It’s often said that spec-series racing, where all of the drivers use the same cars, produces the best racing because everyone has equal opportunity. However, in our humble opinion, regulated BoP can aid racing by offering varied car shapes and characteristics.

Some cars may handle better, others are faster in a straight line or even have better fuel or tyre economy. The important part is making sure they balance out to make it fair for everyone in a race.

Studio 397 has taken a thorough approach to the new season’s BoP. The simulation’s engineers inspect physics data, telemetry and feedback from their team of test drivers to get it just right. Fingers crossed that it leads to great racing ahead of Season 3 of the GT Pro Series on rFactor 2!

The updates come as rFactor 2 prepares for the new season of their popular GT Pro series, due to start on 8th March 2021. The previous season had a little bit of a Callaway Corvette C7 vibe to it with almost all of the competitors favouring the American muscle because of it’s generous BoP. Evidently, this is no more.

The developers have also inspected and addressed various other parts of the cars. There have been some aerodynamic effect changes that should ultimately make the car lose less grip when following a competitor. These aero updates also affect how fast “exaggerated” sliding is – this will make the car more stable and smoother to drive.

The full changelog up of updates is available on the rFactor 2 website or you can read on below:

February 2021 rFactor 2 GT3 Balance of Performance (BoP) Update Notes

Aston Martin Vantage GT3 v1.87

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  • BoP adjustments: +5kg weight penalty, -1% engine power.
  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Default setup: -1 to rear wing.
  • Recalculated fuel consumption.

Audi R8 GT3 2018 v1.89

  • BoP adjustments: -20kg weight penalty.
  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • P4 is new default the rear wing,
  • Adjusted drivetrain losses (resulting in slightly more engine power on the wheels).
  • Adjusted aero drag.
  • Default setup: P4 rear wing, +1 to front and rear ARB, +0.352deg to rear toe in, +2 to TC, +14 to differential preload, -0.5deg to rear camber, +1 rear springs.
  • Recalculated fuel consumption.

Audi R8 GT3 2019 v1.61

  • BoP adjustments: -20kg weight penalty.
  • Adjusted total inertia, tweaks to default setup to make the car more stable.
    New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • P4 is new default the rear wing.
  • Adjusted drivetrain losses (resulting in slightly more engine power on the wheels).
  • Adjusted aero drag.
  • Default setup: P4 rear wing, +1 to front and rear ARB, +0.352deg to rear toe in, +2 to TC, +14 to differential preload, -0.5deg to rear camber, +1 to rear springs.
  • Recalculated fuel consumption.

Bentley Continental GT3 2020 v1.23

  • BoP adjustments: -20kg weight penalty.
  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Adjusted drivetrain losses (resulting in more engine power on the wheels).
  • Adjusted aero drag, about 0.5% forward aero balance shift.
  • Default setup: +1 to TC.
  • Recalculated fuel consumption.

Bentley Continental GT3 2017 v2.89

  • BoP adjustments: +2% engine power.
  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Fixed damper travel to bump stops (15mm more on front and 11mm on rear).
  • Increased maximum packer stack to 40mm.
  • Tweaks to inertia and center of gravity.
  • Readjusted aero balance and drag.
  • Lower (slower) steering rack ratio.
  • Adjusted differential locking rates.
  • Default setup: brake bias F54.2%, differential preload 120Nm.
  • Recalculated fuel consumption.

BMW M6 GT3 v1.79

  • BoP adjustments: +10kg weight penalty.
  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Adjusted drivetrain inertia (resulting in slightly less engine power on the wheels).
  • Adjusted aero drag.
  • Recalculated fuel consumption.


Callaway C7 GT3-R v3.01

  • BoP adjustments: +10kg weight penalty, -1% engine power.
  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Default setup: +1 to default rear wing.
  • Recalculated fuel consumption.

Ferrari 488 GT3 v1.45

  •  new values for draft lifts (FW, RW and diffuser).
  •  modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (means, less speed gain when drafting).
  • Adjusted aero drag.
  • Recalculated fuel consumption.

McLaren 650S GT3 v2.85

  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Adjusted drivetrain losses (resulting in more engine power on the wheels).
  • Rebalanced aero balance and drag.
  • Fixed incorrect damper travel to bump stops.
  • Default setup: P4 rear wing.
  • Recalculated fuel consumption.

McLaren 720S GT3 v1.75

  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Adjusted drivetrain losses (resulting in more engine power on the wheels).
  • Adjusted aero drag.
  • Fixed incorrect damper travel to bump stops.
  • Recalculated fuel consumption.

Mercedes AMG GT3 v2.95

  • BoP adjustments: -10kg weight penalty,
  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
    Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • adjusted drivetrain losses (resulting in more engine power on the wheels).
  • Rebalanced aero balance and drag.
  • Default setup: +1 to TC, P10 rear wing.
  • Recalculated fuel consumption.

Porsche 991 GT3 v1.75

  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Adjusted drivetrain losses (resulting in less engine power on the wheels).
  • Rebalanced aero balance, drag and rear downforce between rear wing and diffuser.
  • Adjusted center of gravity height and chassis inertia.
  • Fixed issue with damper travel to bump stops.
  • Default setup:  P11 rear wing, +1 to TC, +2 to front and rear ARB, –0.117deg to front toein, +0.352deg to rear toe-in.
  • Recalculated fuel consumption.

Radical RXC GT3 2017 v2.85

  • New values for draft lifts (FW, RW and diffuser).
  • Modifications to yaw aero response (affects sliding sideways).
  • Tweaks to diffuser stalling parameters (the car is less snappy now, when bottoming out).
  • Reduced slipstreaming effects on drag (lower speed gain when drafting).
  • Rebalanced aero balance and drag.
  • Recalculated fuel consumption.

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