| SessionTime | Seconds since session start | s |
| SessionTick | Current update number | |
| SessionNum | Session number | |
| SessionState | Session state | irsdk_SessionState |
| SessionUniqueID | Session ID | |
| SessionFlags | Session flags | irsdk_Flags |
| SessionTimeRemain | Seconds left till session ends | s |
| SessionLapsRemain | Old laps left till session ends use SessionLapsRemainEx | |
| SessionLapsRemainEx | New improved laps left till session ends | |
| SessionTimeTotal | Total number of seconds in session | s |
| SessionLapsTotal | Total number of laps in session | |
| SessionJokerLapsRemain | Joker laps remaining to be taken | |
| SessionOnJokerLap | Player is currently completing a joker lap | |
| SessionTimeOfDay | Time of day in seconds | s |
| RadioTransmitCarIdx | The car index of the current person speaking on the radio | |
| RadioTransmitRadioIdx | The radio index of the current person speaking on the radio | |
| RadioTransmitFrequencyIdx | The frequency index of the current person speaking on the radio | |
| DisplayUnits | Default units for the user interface 0 = english 1 = metric | |
| DriverMarker | Driver activated flag | |
| PushToTalk | Push to talk button state | |
| PushToPass | Push to pass button state | |
| ManualBoost | Hybrid manual boost state | |
| ManualNoBoost | Hybrid manual no boost state | |
| IsOnTrack | 1=Car on track physics running with player in car | |
| IsReplayPlaying | 0=replay not playing 1=replay playing | |
| ReplayFrameNum | Integer replay frame number (60 per second) | |
| ReplayFrameNumEnd | Integer replay frame number from end of tape | |
| IsDiskLoggingEnabled | 0=disk based telemetry turned off 1=turned on | |
| IsDiskLoggingActive | 0=disk based telemetry file not being written 1=being written | |
| FrameRate | Average frames per second | fps |
| CpuUsageFG | Percent of available tim fg thread took with a 1 sec avg | % |
| GpuUsage | Percent of available tim gpu took with a 1 sec avg | % |
| ChanAvgLatency | Communications average latency | s |
| ChanLatency | Communications latency | s |
| ChanQuality | Communications quality | % |
| ChanPartnerQuality | Partner communications quality | % |
| CpuUsageBG | Percent of available tim bg thread took with a 1 sec avg | % |
| ChanClockSkew | Communications server clock skew | s |
| MemPageFaultSec | Memory page faults per second | |
| MemSoftPageFaultSec | Memory soft page faults per second | |
| PlayerCarPosition | Players position in race | |
| PlayerCarClassPosition | Players class position in race | |
| PlayerCarClass | Player car class id | |
| PlayerTrackSurface | Players car track surface type | irsdk_TrkLoc |
| PlayerTrackSurfaceMaterial | Players car track surface material type | irsdk_TrkSurf |
| PlayerCarIdx | Players carIdx | |
| PlayerCarTeamIncidentCount | Players team incident count for this session | |
| PlayerCarMyIncidentCount | Players own incident count for this session | |
| PlayerCarDriverIncidentCount | Teams current drivers incident count for this session | |
| PlayerCarWeightPenalty | Players weight penalty | kg |
| PlayerCarPowerAdjust | Players power adjust | % |
| PlayerCarDryTireSetLimit | Players dry tire set limit | |
| PlayerCarTowTime | Players car is being towed if time is greater than zero | s |
| PlayerCarInPitStall | Players car is properly in their pitstall | |
| PlayerCarPitSvStatus | Players car pit service status bits | irsdk_PitSvStatus |
| PlayerTireCompound | Players car current tire compound | |
| PlayerFastRepairsUsed | Players car number of fast repairs used | |
| CarIdxLap | Laps started by car index | |
| CarIdxLapCompleted | Laps completed by car index | |
| CarIdxLapDistPct | Percentage distance around lap by car index | % |
| CarIdxTrackSurface | Track surface type by car index | irsdk_TrkLoc |
| CarIdxTrackSurfaceMaterial | Track surface material type by car index | irsdk_TrkSurf |
| CarIdxOnPitRoad | On pit road between the cones by car index | |
| CarIdxPosition | Cars position in race by car index | |
| CarIdxClassPosition | Cars class position in race by car index | |
| CarIdxClass | Cars class id by car index | |
| CarIdxF2Time | Race time behind leader or fastest lap time otherwise | s |
| CarIdxEstTime | Estimated time to reach current location on track | s |
| CarIdxLastLapTime | Cars last lap time | s |
| CarIdxBestLapTime | Cars best lap time | s |
| CarIdxBestLapNum | Cars best lap number | |
| CarIdxTireCompound | Cars current tire compound | |
| CarIdxQualTireCompound | Cars Qual tire compound | |
| CarIdxQualTireCompoundLocked | Cars Qual tire compound is locked-in | |
| CarIdxFastRepairsUsed | How many fast repairs each car has used | |
| CarIdxSessionFlags | Session flags for each player | irsdk_Flags |
| PaceMode | Are we pacing or not | irsdk_PaceMode |
| CarIdxPaceLine | What line cars are pacing in or -1 if not pacing | |
| CarIdxPaceRow | What row cars are pacing in or -1 if not pacing | |
| CarIdxPaceFlags | Pacing status flags for each car | irsdk_PaceFlags |
| OnPitRoad | Is the player car on pit road between the cones | |
| CarIdxSteer | Steering wheel angle by car index | rad |
| CarIdxRPM | Engine rpm by car index | revs/min |
| CarIdxGear | -1=reverse 0=neutral 1..n=current gear by car index | |
| SteeringWheelAngle | Steering wheel angle | rad |
| Throttle | 0=off throttle to 1=full throttle | % |
| Brake | 0=brake released to 1=max pedal force | % |
| Clutch | 0=disengaged to 1=fully engaged | % |
| Gear | -1=reverse 0=neutral 1..n=current gear | |
| RPM | Engine rpm | revs/min |
| PlayerCarSLFirstRPM | Shift light first light rpm | revs/min |
| PlayerCarSLShiftRPM | Shift light shift rpm | revs/min |
| PlayerCarSLLastRPM | Shift light last light rpm | revs/min |
| PlayerCarSLBlinkRPM | Shift light blink rpm | revs/min |
| Lap | Laps started count | |
| LapCompleted | Laps completed count | |
| LapDist | Meters traveled from S/F this lap | m |
| LapDistPct | Percentage distance around lap | % |
| RaceLaps | Laps completed in race | |
| LapBestLap | Players best lap number | |
| LapBestLapTime | Players best lap time | s |
| LapLastLapTime | Players last lap time | s |
| LapCurrentLapTime | Estimate of players current lap time as shown in F3 box | s |
| LapLasNLapSeq | Player num consecutive clean laps completed for N average | |
| LapLastNLapTime | Player last N average lap time | s |
| LapBestNLapLap | Player last lap in best N average lap time | |
| LapBestNLapTime | Player best N average lap time | s |
| LapDeltaToBestLap | Delta time for best lap | s |
| LapDeltaToBestLap_DD | Rate of change of delta time for best lap | s/s |
| LapDeltaToBestLap_OK | Delta time for best lap is valid | |
| LapDeltaToOptimalLap | Delta time for optimal lap | s |
| LapDeltaToOptimalLap_DD | Rate of change of delta time for optimal lap | s/s |
| LapDeltaToOptimalLap_OK | Delta time for optimal lap is valid | |
| LapDeltaToSessionBestLap | Delta time for session best lap | s |
| LapDeltaToSessionBestLap_DD | Rate of change of delta time for session best lap | s/s |
| LapDeltaToSessionBestLap_OK | Delta time for session best lap is valid | |
| LapDeltaToSessionOptimalLap | Delta time for session optimal lap | s |
| LapDeltaToSessionOptimalLap_DD | Rate of change of delta time for session optimal lap | s/s |
| LapDeltaToSessionOptimalLap_OK | Delta time for session optimal lap is valid | |
| LapDeltaToSessionLastlLap | Delta time for session last lap | s |
| LapDeltaToSessionLastlLap_DD | Rate of change of delta time for session last lap | s/s |
| LapDeltaToSessionLastlLap_OK | Delta time for session last lap is valid | |
| Speed | GPS vehicle speed | m/s |
| Yaw | Yaw orientation | rad |
| YawNorth | Yaw orientation relative to north | rad |
| Pitch | Pitch orientation | rad |
| Roll | Roll orientation | rad |
| EnterExitReset | Indicate action the reset key will take 0 enter 1 exit 2 reset | |
| TrackTemp | Deprecated set to TrackTempCrew | C |
| TrackTempCrew | Temperature of track measured by crew around track | C |
| AirTemp | Temperature of air at start/finish line | C |
| TrackWetness | How wet is the average track surface | irsdk_TrackWetness |
| Skies | Skies (0=clear/1=p cloudy/2=m cloudy/3=overcast) | |
| AirDensity | Density of air at start/finish line | kg/m^3 |
| AirPressure | Pressure of air at start/finish line | Pa |
| WindVel | Wind velocity at start/finish line | m/s |
| WindDir | Wind direction at start/finish line | rad |
| RelativeHumidity | Relative Humidity at start/finish line | % |
| FogLevel | Fog level at start/finish line | % |
| Precipitation | Precipitation at start/finish line | % |
| SolarAltitude | Sun angle above horizon in radians | rad |
| SolarAzimuth | Sun angle clockwise from north in radians | rad |
| WeatherDeclaredWet | The steward says rain tires can be used | |
| DCLapStatus | Status of driver change lap requirements | |
| DCDriversSoFar | Number of team drivers who have run a stint | |
| OkToReloadTextures | True if it is ok to reload car textures at this time | |
| LoadNumTextures | True if the car_num texture will be loaded | |
| CarLeftRight | Notify if car is to the left or right of driver | irsdk_CarLeftRight |
| PitsOpen | True if pit stop is allowed for the current player | |
| VidCapEnabled | True if video capture system is enabled | |
| VidCapActive | True if video currently being captured | |
| PitRepairLeft | Time left for mandatory pit repairs if repairs are active | s |
| PitOptRepairLeft | Time left for optional repairs if repairs are active | s |
| PitstopActive | Is the player getting pit stop service | |
| FastRepairUsed | How many fast repairs used so far | |
| FastRepairAvailable | How many fast repairs left 255 is unlimited | |
| LFTiresUsed | How many left front tires used so far | |
| RFTiresUsed | How many right front tires used so far | |
| LRTiresUsed | How many left rear tires used so far | |
| RRTiresUsed | How many right rear tires used so far | |
| LeftTireSetsUsed | How many left tire sets used so far | |
| RightTireSetsUsed | How many right tire sets used so far | |
| FrontTireSetsUsed | How many front tire sets used so far | |
| RearTireSetsUsed | How many rear tire sets used so far | |
| TireSetsUsed | How many tire sets used so far | |
| LFTiresAvailable | How many left front tires are remaining 255 is unlimited | |
| RFTiresAvailable | How many right front tires are remaining 255 is unlimited | |
| LRTiresAvailable | How many left rear tires are remaining 255 is unlimited | |
| RRTiresAvailable | How many right rear tires are remaining 255 is unlimited | |
| LeftTireSetsAvailable | How many left tire sets are remaining 255 is unlimited | |
| RightTireSetsAvailable | How many right tire sets are remaining 255 is unlimited | |
| FrontTireSetsAvailable | How many front tire sets are remaining 255 is unlimited | |
| RearTireSetsAvailable | How many rear tire sets are remaining 255 is unlimited | |
| TireSetsAvailable | How many tire sets are remaining 255 is unlimited | |
| CamCarIdx | Active camera's focus car index | |
| CamCameraNumber | Active camera number | |
| CamGroupNumber | Active camera group number | |
| CamCameraState | State of camera system | irsdk_CameraState |
| IsOnTrackCar | 1=Car on track physics running | |
| IsInGarage | 1=Car in garage physics running | |
| SteeringWheelAngleMax | Steering wheel max angle | rad |
| ShiftPowerPct | Friction torque applied to gears when shifting or grinding | % |
| ShiftGrindRPM | RPM of shifter grinding noise | RPM |
| ThrottleRaw | Raw throttle input 0=off throttle to 1=full throttle | % |
| BrakeRaw | Raw brake input 0=brake released to 1=max pedal force | % |
| ClutchRaw | Raw clutch input 0=disengaged to 1=fully engaged | % |
| HandbrakeRaw | Raw handbrake input 0=handbrake released to 1=max force | % |
| BrakeABSactive | true if abs is currently reducing brake force pressure | |
| EngineWarnings | Bitfield for warning lights | irsdk_EngineWarnings |
| FuelLevelPct | Percent fuel remaining | % |
| PitSvFlags | Bitfield of pit service checkboxes | irsdk_PitSvFlags |
| PitSvLFP | Pit service left front tire pressure | kPa |
| PitSvRFP | Pit service right front tire pressure | kPa |
| PitSvLRP | Pit service left rear tire pressure | kPa |
| PitSvRRP | Pit service right rear tire pressure | kPa |
| PitSvFuel | Pit service fuel add amount | l or kWh |
| PitSvTireCompound | Pit service pending tire compound | |
| CarIdxP2P_Status | Push2Pass active or not | |
| CarIdxP2P_Count | Push2Pass count of usage (or remaining in Race) | |
| SteeringWheelPctTorque | Force feedback % max torque on steering shaft unsigned | % |
| SteeringWheelPctTorqueSign | Force feedback % max torque on steering shaft signed | % |
| SteeringWheelPctTorqueSignStops | Force feedback % max torque on steering shaft signed stops | % |
| SteeringWheelPctIntensity | Force feedback % max intensity | % |
| SteeringWheelPctSmoothing | Force feedback % max smoothing | % |
| SteeringWheelPctDamper | Force feedback % max damping | % |
| SteeringWheelLimiter | Force feedback limiter strength limits impacts and oscillation | % |
| SteeringWheelMaxForceNm | Value of strength or max force slider in Nm for FFB | N*m |
| SteeringWheelPeakForceNm | Peak torque mapping to direct input units for FFB | N*m |
| SteeringWheelUseLinear | True if steering wheel force is using linear mode | |
| ShiftIndicatorPct | DEPRECATED use DriverCarSLBlinkRPM instead | % |
| ReplayPlaySpeed | Replay playback speed | |
| ReplayPlaySlowMotion | 0=not slow motion 1=replay is in slow motion | |
| ReplaySessionTime | Seconds since replay session start | s |
| ReplaySessionNum | Replay session number | |
| TireLF_RumblePitch | Players LF Tire Sound rumblestrip pitch | Hz |
| TireRF_RumblePitch | Players RF Tire Sound rumblestrip pitch | Hz |
| TireLR_RumblePitch | Players LR Tire Sound rumblestrip pitch | Hz |
| TireRR_RumblePitch | Players RR Tire Sound rumblestrip pitch | Hz |
| IsGarageVisible | 1=Garage screen is visible | |
| SteeringWheelTorque_ST | Output torque on steering shaft at 360 Hz | N*m |
| SteeringWheelTorque | Output torque on steering shaft | N*m |
| VelocityZ_ST | Z velocity | m/s at 360 Hz |
| VelocityY_ST | Y velocity | m/s at 360 Hz |
| VelocityX_ST | X velocity | m/s at 360 Hz |
| VelocityZ | Z velocity | m/s |
| VelocityY | Y velocity | m/s |
| VelocityX | X velocity | m/s |
| YawRate_ST | Yaw rate at 360 Hz | rad/s |
| PitchRate_ST | Pitch rate at 360 Hz | rad/s |
| RollRate_ST | Roll rate at 360 Hz | rad/s |
| YawRate | Yaw rate | rad/s |
| PitchRate | Pitch rate | rad/s |
| RollRate | Roll rate | rad/s |
| VertAccel_ST | Vertical acceleration (including gravity) at 360 Hz | m/s^2 |
| LatAccel_ST | Lateral acceleration (including gravity) at 360 Hz | m/s^2 |
| LongAccel_ST | Longitudinal acceleration (including gravity) at 360 Hz | m/s^2 |
| VertAccel | Vertical acceleration (including gravity) | m/s^2 |
| LatAccel | Lateral acceleration (including gravity) | m/s^2 |
| LongAccel | Longitudinal acceleration (including gravity) | m/s^2 |
| dcStarter | In car trigger car starter | |
| dcPitSpeedLimiterToggle | In car traction control active | |
| dcTractionControlToggle | In car traction control active | |
| dcHeadlightFlash | In car headlight flash control active | |
| dpWindshieldTearoff | Pitstop windshield tearoff | |
| dcToggleWindshieldWipers | In car turn wipers on or off | |
| dcTriggerWindshieldWipers | In car momentarily turn on wipers | |
| dpRFTireChange | Pitstop rf tire change request | |
| dpLFTireChange | Pitstop lf tire change request | |
| dpRRTireChange | Pitstop rr tire change request | |
| dpLRTireChange | Pitstop lr tire change request | |
| dpFuelFill | Pitstop fuel fill flag | |
| dpFuelAddKg | Pitstop fuel add amount | kg |
| dpFastRepair | Pitstop fast repair set | |
| dcDashPage | In car dash display page adjustment | |
| dcBrakeBias | In car brake bias adjustment | |
| dpLFTireColdPress | Pitstop lf tire cold pressure adjustment | Pa |
| dpRFTireColdPress | Pitstop rf cold tire pressure adjustment | Pa |
| dpLRTireColdPress | Pitstop lr tire cold pressure adjustment | Pa |
| dpRRTireColdPress | Pitstop rr cold tire pressure adjustment | Pa |
| dcThrottleShape | In car throttle shape adjustment | |
| dcPowerSteering | In car power steering adjustment | |
| dcTractionControl2 | In car traction control 2 adjustment | |
| dcTractionControl | In car traction control adjustment | |
| dpFuelAutoFillEnabled | Pitstop auto fill fuel system enabled | |
| dpFuelAutoFillActive | Pitstop auto fill fuel next stop flag | |
| RFbrakeLinePress | RF brake line pressure | bar |
| RFcoldPressure | RF tire cold pressure as set in the garage | kPa |
| RFtempCL | RF tire left carcass temperature | C |
| RFtempCM | RF tire middle carcass temperature | C |
| RFtempCR | RF tire right carcass temperature | C |
| RFwearL | RF tire left percent tread remaining | % |
| RFwearM | RF tire middle percent tread remaining | % |
| RFwearR | RF tire right percent tread remaining | % |
| LFbrakeLinePress | LF brake line pressure | bar |
| LFcoldPressure | LF tire cold pressure as set in the garage | kPa |
| LFtempCL | LF tire left carcass temperature | C |
| LFtempCM | LF tire middle carcass temperature | C |
| LFtempCR | LF tire right carcass temperature | C |
| LFwearL | LF tire left percent tread remaining | % |
| LFwearM | LF tire middle percent tread remaining | % |
| LFwearR | LF tire right percent tread remaining | % |
| FuelUsePerHour | Engine fuel used instantaneous | kg/h |
| Voltage | Engine voltage | V |
| WaterTemp | Engine coolant temp | C |
| WaterLevel | Engine coolant level | l |
| FuelPress | Engine fuel pressure | bar |
| OilTemp | Engine oil temperature | C |
| OilPress | Engine oil pressure | bar |
| OilLevel | Engine oil level | l |
| ManifoldPress | Engine manifold pressure | bar |
| FuelLevel | Liters of fuel remaining | l |
| Engine0_RPM | Engine0Engine rpm | revs/min |
| RRbrakeLinePress | RR brake line pressure | bar |
| RRcoldPressure | RR tire cold pressure as set in the garage | kPa |
| RRtempCL | RR tire left carcass temperature | C |
| RRtempCM | RR tire middle carcass temperature | C |
| RRtempCR | RR tire right carcass temperature | C |
| RRwearL | RR tire left percent tread remaining | % |
| RRwearM | RR tire middle percent tread remaining | % |
| RRwearR | RR tire right percent tread remaining | % |
| LRbrakeLinePress | LR brake line pressure | bar |
| LRcoldPressure | LR tire cold pressure as set in the garage | kPa |
| LRtempCL | LR tire left carcass temperature | C |
| LRtempCM | LR tire middle carcass temperature | C |
| LRtempCR | LR tire right carcass temperature | C |
| LRwearL | LR tire left percent tread remaining | % |
| LRwearM | LR tire middle percent tread remaining | % |
| LRwearR | LR tire right percent tread remaining | % |
| LRshockDefl | LR shock deflection | m |
| LRshockDefl_ST | LR shock deflection at 360 Hz | m |
| LRshockVel | LR shock velocity | m/s |
| LRshockVel_ST | LR shock velocity at 360 Hz | m/s |
| RRshockDefl | RR shock deflection | m |
| RRshockDefl_ST | RR shock deflection at 360 Hz | m |
| RRshockVel | RR shock velocity | m/s |
| RRshockVel_ST | RR shock velocity at 360 Hz | m/s |
| LFshockDefl | LF shock deflection | m |
| LFshockDefl_ST | LF shock deflection at 360 Hz | m |
| LFshockVel | LF shock velocity | m/s |
| LFshockVel_ST | LF shock velocity at 360 Hz | m/s |
| RFshockDefl | RF shock deflection | m |
| RFshockDefl_ST | RF shock deflection at 360 Hz | m |
| RFshockVel | RF shock velocity | m/s |
| RFshockVel_ST | RF shock velocity at 360 Hz | m/s |