Here is the answer you came for, before the ads and the anecdotes. Set your wheelbase to 100% strength in its own software. Turn the filters down to nearly nothing. In iRacing, tick Use linear mode, set Strength to 100%, Damping to 0, Min Force to 0, and then forget all of it and spend your time on one number: Max Force, which you set separately for every car you drive. That’s the whole guide. Everything after this is me explaining why the other 40 tabs you have open are wrong.

The reason it’s this simple is that iRacing barely does anything to the force feedback signal. Most sims pass the physics through a stack of effects: canned understeer cues, road texture generators, curb rumble, engine vibration piped into the wheel. iRacing sends you steering rack torque at 360Hz and stops. That’s it. There is no “road effects” slider because there is no road effect. If you feel the Nürburgring’s surface change under the front tyres, it’s because the tyre model actually produced that load, one reason iRacing rates so well in our best racing sim comparison. Which is great, and also means that every filter you stack on top is you deliberately deleting information the sim went to the trouble of calculating.

Base settings: the boring part

Do this once and stop touching it. Rotation is the one row people overthink; our wheel rotation degrees per sim guide explains why iRacing wants the base set wide.

The spring and damper settings on a Fanatec base (SPR, DPR) are legacy DirectInput effects. iRacing doesn’t send them. They sit at 100 and do nothing, and every year somebody posts a “settings guide” that tells you to change them, which is a decent tell that they’ve never opened the sim.

Fanatec’s FFS setting is the one people get backwards. PEAK is the honest one: it passes the signal through and lets it clip if you ask for too much. LIN compresses the top end so the wheel feels stronger while flattening exactly the peak forces that tell you the front tyre is done. Use PEAK. If it feels weak, your Max Force is too high, which is a different problem with a different fix.

On the Moza side, Road Sensitivity is the one worth experimenting with. It’s a low-pass filter dressed up in marketing language. Default 8 is fine. Push it to 10 and you get more high-frequency chatter, including chatter that is genuinely just the physics engine’s numerical noise on some older content. Drop it to 6 and an R9 stops feeling like it’s grinding gravel through the rim on the Nordschleife. I run 8 and don’t think about it.

Max Force is the entire game

iRacing’s Max Force is the amount of steering rack torque (in Newton-metres, measured at the virtual rack, not at your wheel) that corresponds to 100% output from your base. Set it too high and the car feels dead because you’re mapping a huge range of force into your wheel’s smaller one. Set it too low and everything above medium load clips flat, which is the sensation people describe as “notchy” or “I can’t feel the front let go.”

Real starting points, with linear mode on, for a base in the 8 to 12 Nm range:

• Mazda MX-5 Global: 12 to 18
• Formula Vee: 10 to 15
• Skip Barber: 18 to 24
• GT4 (Mustang, 718 Cayman): 24 to 32
• GT3 (992 GT3 R, Ferrari 296, McLaren 720S): 28 to 40
• NASCAR Next Gen: 35 to 45
• Dallara IR18: 45 to 60

These are starting points, not gospel. The proper method: drive two hard laps, then hit the Auto button on the force feedback page. iRacing looks at the peak rack torque it saw and sets Max Force just above it, so you never clip. Then, and this is the part nobody tells you, drop that number by about 10%. A little clipping in the single heaviest corner of the lap is a fair trade for more resolution everywhere else. New to the concept? Our FFB clipping explainer covers how to spot it. You are not driving by the peak. You’re driving by the 60% region where the front tyre is loading up and then quietly stops adding force.

Do this per car. iRacing stores Max Force per car, which is why the Skippy feels perfect and then you jump in a GT3 and the wheel tries to break your thumbs. Same setting file, wildly different rack loads.

The placebo section: Min Force and Damping

Min Force exists because gear-driven wheels have a deadzone. The G29 and the old Fanatec CSL Elite belt bases would produce zero perceptible torque below a certain input, so iRacing added a floor. On those wheels, 3 to 8% was legitimate.

On a direct drive motor, cogging is measured in fractions of a Newton-metre and the deadzone is essentially zero. Min Force should be 0. If you set it to 5% on a Moza R9 you are adding a constant 0.45 Nm of force in the straight-ahead position, which means the wheel now resists returning to center and you’ve invented a self-centering problem you didn’t have. I still see 5% recommended in guides written in 2026. It’s cargo cult.

Damping in iRacing is a global smoothing that adds resistance proportional to steering velocity. Zero. If your wheel feels too lively, add 5 to 10 NDP on a Fanatec base instead, or a couple of points of damper in Pit House, because those are applied by the base’s own controller at a much higher rate than iRacing can manage over USB. Slightly nerdy distinction, real difference in feel.

Wheel Force, and the case for lying to yourself

The Wheel Force field (in Nm) tells iRacing how strong your base actually is, so its calculations line up. A Fanatec CSL DD with the Boost Kit is 8. A Moza R12 is 12. Enter the true number.

Then go into your base software and turn the overall output down.

I run a 12 Nm base at roughly 65 to 70% because I like to finish a two-hour Spa race with functioning forearms. Peak torque is a marketing number and the honest truth is that above about 8 Nm you stop learning anything new about the car and start doing isometric holds. The 5.5 Nm Moza R5 will teach a beginner more about catching a slide than a 21 Nm R21 that they’ve dialed down to 30% and filtered into mush. If you’re deciding between more torque and a load cell brake pedal, buy the brake pedal. It isn’t close. Braking is where lap time lives, and going from a potentiometer pedal to a load cell is the single biggest jump in consistency most people ever experience in this hobby.

Your desk is the weakest component

None of this matters if the whole assembly moves.

Direct drive above 5 Nm on a clamped desk mount is a running joke for a reason. The wheel pulls, the desk twists a few millimetres, the wheel pulls back, and the delay reads as vagueness. You will spend weeks fiddling with INT and Road Sensitivity trying to fix what is, structurally, a wobbly IKEA tabletop. If your monitor visibly nods when you hit the sausage curbs at Watkins Glen, the problem is not your FFB settings.

Two fixes. A proper cockpit (8020 aluminium, around $500 to $900 before pedals and a seat), or, if you’re desk-bound, a base plate that bolts through the desk rather than clamping to it, plus a desk with a solid frame. The wheel stand crowd will tell you their stand is fine. It flexes. Everyone’s flexes. Some just flex politely.

What people actually fight about

Go read r/iRacing for ten minutes and you’ll find the same three arguments on rotation.

Linear mode off feels stronger, so a chunk of people insist it’s better. It’s compression. You’re getting a loud master with the dynamic range squashed, and the specific dynamic range you’re squashing is the one that tells you the front axle has stopped generating grip. Leave it on.

irFFB, the third-party tool that injects suspension bumps and higher-rate updates, used to be close to mandatory on belt wheels. On a modern DD base it mostly adds effects that aren’t in the physics, which is the exact thing iRacing is designed not to do. Some people love it. I turned it off two years ago and never reinstalled it.

The other argument is the brand one, and it’s changed. Fanatec’s support reputation genuinely cratered around Endor’s financial collapse, with RMA queues measured in months and a lot of very angry threads. Corsair bought the business and things have stabilized, but the hardware pricing is no longer the bargain it was in 2021 and the Fanatec CSL DD at 5 Nm is now competing against Moza gear that’s frequently better value. Moza’s counterargument writes itself: Pit House is clunky (it must be running for your profiles to load, and its per-game auto-switch has been flaky through several firmware versions), the brand is newer, and their QC has produced more than a few dead-on-arrival units. My position, and I’ll defend it: for a first direct drive setup in 2026, the Moza R5 or R9 V2 bundle is the better buy, and I say that as someone with a Fanatec base still bolted to a rig in the corner.

FAQ

Do I need to change anything for wet or rain races? No, and this trips people up. In heavy rain the rack loads drop because the tyres aren’t generating as much force, so the wheel goes light. That’s correct behaviour and it’s telling you something real. Don’t crank Max Force down to compensate, or you’ll get a nasty surprise when the line dries.

Why does my wheel violently snap when I load into a session? Enable “Reduce force when parked”. iRacing calculates rack torque even when you’re sitting in the pits with the wheels stationary at full lock, and the result is a base that tries to relocate your thumb. It’s the first box I tick on a fresh install.

Is 8 Nm enough for iRacing? Yes. Comfortably. Almost all of iRacing’s road content sits under 40 Nm of rack torque, and once you’ve set Max Force correctly the difference between an 8 Nm base and a 15 Nm base is how tired your shoulders are, not how much you can feel. The exception is heavy-steering content like the Next Gen Cup car or older stock cars, where more headroom does help. That’s a narrow reason to spend an extra $400.

Before you order anything

Check the desk. Seriously, put both hands on your wheel mounting point and push sideways hard. If it moves more than a whisker, put the money toward a rig instead of a bigger motor, because a 12 Nm base bolted to a flexible surface will feel worse than a 5 Nm base bolted to something solid.

If you’re already sorted for mounting and you’re picking hardware: get the Moza R5 bundle if this is your first DD and you want to stop researching (around $500 with wheel and pedals), the Moza R9 V2 if you race two nights a week and want a base you won’t outgrow, and skip anything above 12 Nm unless you have an aluminium rig and a specific reason. Put the savings into a load cell brake, either the Moza SR-P or the Fanatec CSL Elite V2 set, and into a iRacing subscription bought annually rather than monthly, since the per-month price roughly halves and there’s usually a promo code floating around for new members that takes a chunk off the first term.

Then set Max Force per car and go drive. The settings are done. If the sim itself is stuttering, that’s a different fix, covered in our iRacing performance settings guide.