SimuCube 2 Pro CCGEP SF FFB Settings by Shovas
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260301
Tuning CCGEP CF FFB
- Min-Max Tuning Starting From Shovas 2026-03-01 Settings
- BMW M3 GTR at Donington 1pm Rainfall None
- Parking lot K-forces disabled
- Powersteering forces disabled
- ffbMode = 1 ; 1=CCGEP Steering Force FFB; 2=Game FFB or other plugins eg. RealFeel FFB or Leo FFB
- ffbCCGEPGain = 1.000000
- 1) ffbCCGEPPneumaticTrailNM = 0.000025 ; How heavy pneumatic trail effect is; 0.000005 to 0.000020
- My old value: 0.000010
- Testing: 0.000005, 0.000020, 0.00004, 0.00003, 0.000025+
- Notes:
- 0.00003: Feels something like default GTR2 ffb drop-off when losing grip
- 3) ffbCCGEPSuspensionTrailM = 0.04765625 ; FFB strength at the grip limit or
beyond; Default: 0.05; Suggested: 0.02 to 0.05
- My old value: 0.050000
- Testing: 0.05, 0.1-, 0.02-, 0.035-, 0.0425+, 0.04625, 0.048125?, (0.0490625-, 0.0471875+), 0.04765625
- Notes:
- 0.1: Heavier steering at speed when pneumatic trail has worn off vs 0.05
- 0.02: Lighter steering at speend when pneumatic trail has worn off vs 0.05; Big affect to grip loss force drop (weak wheel).
- Docs: 0.05 is a fairly large value, and would require powersteering in real cars to be possible, but it makes sure
plenty of FFB remains when you’re at the limit or beyond, to help you control the car
- 4) ffbCCGEPSuspensionScrubM = 0.015 ; Feel when left/right tire don't brake equally eg. inside tire lockup can pull on steering; Default: 0.03; Suggested: -0.02-0.06
- My old value: 0.030000
- Testing: -0.02, 0.06, xp(0.12, 0.24, 2.4, 0.48), 0.01+, 0.02, 0.015
- Notes:
- This was too hard to determine. I basically set it to something close to real-world FIA GT at least as far as AI say.
- High scrub radius starts to dominate steering forces or grip weight during grip loss? Yes, very obvious at 2.4, apparent at 0.48 and 0.24.
- Scrub radius is subtle and its feel through ffb is only when brake when left and right tires are locking up at different times. The other effect is on steering force in general when you exaggerate with high values and then it makes it feel like tough, strong weigthted steering.
- AI say cars like FIA GT aim for
- 2) ffbCCGEPGripFractPower = 5.000000 ; How fast this SAT forces fades out as you approach
maximum grip; Lower = Fade out slower, higher = fade out quicker; Default 3.0; Suggested: 1.5-4.5
- My old value: 5.000000
- Testing: 1.5, 4.5, 9.0, 3.0, 3.75, 3.375+, 3.1875+, 3.09375+, 3.046875+, 3.0234375...
- Notes:
- Reminder: Tuned for ffbCCGEPSuspensionTrailM=0.000025
- 1.5: Small, dull force drop off losing grip
- 4.5: Big, sharp force drop off losing grip
- 9.0: Even moreso than 4.5
- 5) ffbCCGEPCasterDegrees = 7.5 ; Feel the vertical loads on the tires; Default: 15.0; Suggested: 10.0-20.0
- My old value: 10.000000
- Testing: 10.0, 20.0, 0.0, 5.0, 7.5
- Notes:
- AI suggests 5-8deg for FIA GT racing cars
- 20deg harder steering, little bit more road feel maybe
- 6) ffbCCGEPKPIDegrees = 11.25 ; Feel the vertical loads on the tires together with ffbCCGEPSuspensiontrailM and ffbCCGEPSuspensionScrubM; Default: 15.0; Suggested: 10.0 to 20.0
- My old value: 15.000000
- Testing 15.0, 30.0, 0, 15, 7.5, 11.25
- Notes:
- AI suggests 8-15deg for FIA GT racing cars
- 7) ffbCCGEPSteeringArmLengthM = 0.150000 ; Same effect as FFB Gain but inverse: x2 = 0.5 FFB Gain. Default: 0.15; Suggested: 0.15.
- My old value: 0.150000
- Note:
- AI suggests 80mm-180mm for FIA GT racing cars
- Longer = lighter ffb mirroring irl longer steering arm = more mechanical force
- Shorter = heavier ffb mirroring irl shorter steering arm = less mechanical force
- TIW: Iron Wolf 2cents: Actually, this setting allows FFB to be realistically heavier or lighter depending on a
specific steering design, exactly how it is irl.
- Question: Theoretically, combined with particular steering geometry, it 'could' feel different, not just lighter or heavier? Not just an FFB gain?
- Answer: Yes, technically speaking, but practically it sounds like its major contribution is to mechanical advantage ie. steering weight lighter or heavier.
- I'm just going to leave this as-is.
- ffbCCGEPAutoParamMask = 0
- Skipping. This is a setting for troubleshooting problems. Not normally needed.
- ffbCCGEPRampUpKMH = 10.000000
- Skipping. This is a safety / quality of life feature. It fades in ffb up to 100% at a given km/h speed.
- ffbCCGEPGamma = 1.000000
- Skipping. When I have a need to fix loose center feeling I'll come back to this.
- ffbCCGEPLeoKf = 2500.000000 ; The maximum force you feel when the car stands still, to turn the tires.
- ffbCCGEPLeoKs = 7.000000 ; Wheel Rubber Hardness or Lateral Scrub Sensitivity. Higher numbers will make it feel less 'elastic'.
- Details:
- It controls how sharply the self-aligning torque rises (due to tire-ground interaction) with slip angle and how “peaky” or “progressive” the force feels as the tire approaches and passes its peak grip.
- Lower values (≈1–3) → softer, more progressive tire feel (like a soft road tire)
- Higher values (≈5–10) → harder, peakier tire feel (like a slick or very stiff tire)
- ffbCCGEPLeoA = 1.500000 ; Pneumatic Trail Stiffness Factor
- Controls the stiffness/strength of the self-aligning torque (due to tire-ground interaction) when the car is stationary or at very low speed (the “parked” or “static” wheel feel).
- Higher values = stronger static forces when the wheels are not rolling.
- 8) ffbCCGEPLeoKr = 1.000000 ; Fade-out Rate
- My old value: 8.000000 - I was trying to fake pneumatic trail still being felt at higher speed, according to AI. Not needed now that pneumatic trail is modeled in CCGEP SF FFB.
- Testing: 8.000000, 1.00000
- Notes:
- Recommended range: 0.0-10.0
- How fast all of the K* forces fade away as car speed increases.
- Lower values mean low speed forces take longer to drop off as you speed up
- Higher values mean low speed forces forces drop off more quickly as you speed up
- As low speed forces drop off, aligning forces gradually move to real physical forces
- ffbStationaryFrictionMagnitude = 0.000000
- ffbStationaryFrictionMaxSpeedKMH = 40.000000
- ffbStationaryFrictionPowerSteeringFactor = 0.500000
- ffbPowerSteeringRunningRPM = 1500.000000
- ffbRFPSoftnessKsWeight = 0.000000
- ffbPerCarMultApplyMinSpeedKMH = 0.000000
- ffbRampUpSeconds = 0.000000 ; Seconds to ramp up FFB after entering cockpit or resuming from Escape/Pause menu
- ffbDisableOnTimeAcceleration = 0 ; Disable FFB on time acceleration to avoid violent accelerated ffb. PLR FFB effects not affected.
- ffbWetSteeringForceMultiplier = 1.000000 ; Rain FFB strength multiplier. 1.0=Disable.
- ffbRoadBumpsMagnitude = 0.000000 ; Multiplier on vertical ffb forces ie. road bumps (not the fake RoadBumps GTR2 params). Start at 0.001.
- Tuning Notes:
- SimuCube 2 Pro 14nm, zero Damping/Friction/Inertia
- Bisection search tuning until step < ~1% diff
- 2 laps minimum to feel cold vs warm tires
- Reference: What Real Steering Feels Like At The Wheel: https://www.simwiki.net/wiki/Force_Feedback#What_Real_Steering_Feels_Like_At_The_Wheel
- Bisection Explorer: https://www.simwiki.net/apps/bisection-explorer/
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