Assetto Corsa Competizione has a very specific force feedback character: it’s heavy in the mid forces and can become harsh over kerbs if you push the wrong sliders.

This guide is a practical ACC tuning workflow for Simagic wheelbases. The goal is simple: keep detail, reduce fatigue, and avoid clipping.

Start with a clean base

Before you change settings, confirm:

• Your wheelbase is rigidly mounted (no deck flex).
• Your seating position is repeatable (wheel distance and height don’t change under load).
• You’ve done basic cable routing to avoid random disconnects. Cable routing matters more than you think.

ACC force feedback: the three sliders that matter most

• Gain: overall output. Too high = clipping and harsh kerbs.
• Minimum force: useful for gear-driven wheels, usually unnecessary on direct drive.
• Road effects: adds texture. Too high turns kerbs into a jackhammer.

If you only change one thing today, make it this: use the clipping workflow and set gain so the wheel never “flat tops” in heavy corners.

A stable Simagic baseline for ACC

Use these principles:

• Let ACC do the physics. Keep wheelbase filters moderate so you don’t “double filter”.
• Reduce harshness at the source. Lower road effects before you add heavy damping.
• Chase consistency, not drama. A calm wheel is faster in ACC.

How to tune in 10 minutes

1. Pick one car and one track you know well (GT3 at a familiar circuit).
2. Set gain low, drive 3 laps, then increase until you almost clip in the heaviest corners.
3. If kerbs are too aggressive, lower road effects first.
4. If the wheel oscillates on straights, reduce rotation speed slightly, then add a small damper.
5. If the wheel feels vague, reduce smoothing and increase gain slightly (without clipping).

Rig stiffness: why ACC “punishes” flex

ACC’s forces can build quickly. If your cockpit twists even a little, you get an extra layer of movement that doesn’t belong to the car. That often feels like:

• inconsistent initial turn-in,
• weird mid-corner “float”,
• and harshness on kerbs that you can’t tune out.

That’s why aluminium profile rigs are so popular for ACC: you can lock down the wheel deck and adjust posture until the car feels consistent.

SIMGASM cockpit pairing for ACC

• Most ACC racers: SIMGASM Club cockpit (C80) or SIMGASM Sport cockpit (C120) depending on torque and upgrade plans.
• High torque + endurance stints: SIMGASM Pro cockpit (C160) if you want maximum stability and comfort.
• Seat choice: SIMGASM Core Recline seat for long sessions, or SIMGASM Atlas GT seat for a locked-in braking posture.

• Entry: SIMGASM Hobby cockpit (C40) if you want the lowest price while still getting a real aluminium rig.
• Most popular: SIMGASM Club cockpit (C80) for “buy once, upgrade later” stiffness.
• High torque / motion: SIMGASM Sport cockpit (C120) or SIMGASM Pro cockpit (C160) depending on torque and how hard you brake.
• Comfort seat option: SIMGASM Core Recline seat if you don’t want a fixed bucket seat.
• Bucket seat options: SIMGASM Atlas GT seat for GT driving position, or SIMGASM Atlas Formula seat for a more laid-back formula/hypercar position.
• Mounting: seat bracket set makes seat install and positioning easier on a profile rig.
• Monitors: integrated triple monitor stand if you want an integrated, space-saving setup, or freestanding triple monitor stand if you want the screen isolated from vibrations and future motion upgrades.
• VESA hardware: VESA mounting bracket set for clean, rigid mounting (especially helpful for triples).
• Wheelbase mounting: wheel mount base set + front wheel mount when you want a clean, rigid wheel deck.
• Alternative mounting: bottom wheel mount and large side plates / small side plates for different base/mounting styles.
• Shifter/handbrake: shifter and handbrake mount + universal peripheral deck for rally/drift layouts.
• Ergonomics add-ons: keyboard swivel mount, heelrest and heel plate for a more “finished” cockpit feel.

Continue reading

• SimPro Manager settings explained: build a Simagic profile that stays detailed
• Simagic iRacing settings: a clean baseline for GT, prototypes and formula cars
• Simagic Alpha vs Alpha U: torque headroom, rig stiffness and when 23Nm makes sense
• Simagic wheelbase settings guide for iRacing and ACC
• Steering angle guide: wheel rotation, soft lock and consistency