ACC v1.9+ | Xbox / PC / PS5

Setup Mastery

The complete guide to understanding and tuning your GT3 car in Assetto Corsa Competizione.

📋 7-Step Workflow Where to start 🔧 Troubleshooter Fix handling issues 🎮 Simulator Try settings live 📖 All Parameters Deep reference

What changed in v1.9+?

🛞

Wider Tyre Window

Optimal pressure expanded from a single value to a 1 PSI window.

🔩

Finite Bumpstops

Bumpstops now have finite compression. Stiffer springs needed.

📐

Camber/Toe Matter More

Camber and toe adjustments now have more realistic trade-offs.

⚡

Platform Stability Key

Ride height + bumpstop tuning is now the #1 priority.

7-Step Setup Workflow

The recommended order for setting up a new car on a new track.

1

Tyre Pressures + Aero Balance

Ride HeightTyre PressureRake

2

Pressure Validation + Aero Fine-tune

Brake BiasPressures

3

Differential Preload

Diff Preload

4

Anti-Roll Bars (Body Roll)

Front ARBRear ARB

5

Wheel Rate + Bumpstop

Wheel RateBumpstop RateBumpstop Range

6

Camber, Toe & Final Pressures

CamberToePressures

7

Final Validation on Fresh Tyres

DampersValidation

Setup Parameters — Complete Reference

Every adjustable parameter explained in detail.

Tyre Pressure (PSI)

Range: 20.3-28.3 PSIStep: 0.1 PSI

The single most important setup parameter.

Camber

Range: -1.0° to -4.0°

Controls the tyre's angle relative to the road surface.

Toe

Range: -0.40° to +0.60°Step: 0.01°

The angle of wheels viewed from above.

TC1 — Traction Control

Range: 0-11Lower = more intervention

Controls TC activation threshold.

TC2 — Traction Control Cut

Range: 0-11

Controls how aggressively TC cuts power.

ABS

Range: 0-12Higher = more intervention

Prevents wheel lockup under braking.

ECU Map

Range: 1-8+

Controls engine power and fuel consumption.

Anti-Roll Bar

Range: 0-10+Higher = stiffer

Brake Power

Range: 80-100%

Brake Bias

Range: ~43-70%Step: 0.2%

Wheel Rate

Car-specific kN/m

Bumpstop Rate / Range

Rate: 300-2300+ N | Range: 0-80mm

Differential Preload

Range: 20-320 NmStep: 10 Nm

Ride Height

Car-specific minimums

Rear Wing

Range: 0-14

Brake Ducts

Range: 0-6

Bump (Slow)

Range: 0-40

Fast Bump

Range: 0-40

Rebound (Slow)

Range: 0-40

Fast Rebound

Range: 0-40

Setup Troubleshooter

Select your handling problem.

Setup Simulator

Adjust parameters and see effects in real-time.

Parameters

Front Ride Height 55mm

Rear Ride Height 77mm

Rear Wing 8

Front ARB 1

Rear ARB 6

Diff Preload 40 Nm

Front Springs 145 kN/m

Rear Springs 155 kN/m

Brake Bias 62.0%

Car Balance

Rake

22mm

Front DF

55%

Rear DF

45%

Top Speed

0%

Entry

Neutral

Mid

Neutral

Exit

Neutral

Physics of a Corner

Understand the forces acting on your car.

The Corner: Phase by Phase

Click each phase.

Weight Transfer

Under Braking

Weight shifts forward under braking.

Key: Brake Bias, Springs, Bump

In Corners

Weight shifts to outside wheels in corners.

Key: ARBs, Camber, Springs, Rebound

Under Acceleration

Weight shifts rearward under acceleration.

Key: Diff, TC, Rear Springs, Rear Bump

Tyre Load vs. Grip

Grip does not increase linearly with load.

Total grip decreases with weight transfer.

The fundamental setup dilemma.

Aerodynamic Forces

Downforce increases with the square of speed.

Every aero decision is a downforce vs. drag trade-off.

Front ride height has 2-3x more aero impact than rear.

Damper Speed Diagram

Dampers have slow and fast speed ranges.

Slow damping controls 80% of what you feel.

Ideal: bell curve centered at 0 mm/s.

Tyre Slip Angle

Tyres generate max grip at 5-8° slip angle.

TC/ABS directly control slip angle.

Pressure affects slip angle curve shape.

Setup Resources

Community sources for v1.9+ setups.

Xbox Note

Console: enter values manually from setup sources.

Free Sources

Coach Dave Academy

Pro setups, some free.

Free + Paid

r/ACCompetizione

Community shared setups on Reddit.

Free

ACC Setup Sync

Community setup browser app (PC).

Free

SimRacing Setup

Setup database with guides.

Free + Paid

Track Adjustments

Base character stays, track-specifics change.

High DF Tracks

Zolder, Brands Hatch, Budapest, Bathurst

Max rear wing
Lower ride heights
Lower brake ducts
Slightly lower pressures

Low DF Tracks

Monza, Paul Ricard, Spa (straights)

Min wing
Higher ride heights
Higher brake ducts
Stiffer rear ARB

Bumpy Tracks

COTA, Suzuka, Kyalami, Laguna Seca

Lower fast dampers
More bumpstop range
Softer springs
More rear toe-in

Street Circuits

Valencia, Norisring

Higher wing
Lower diff preload
Softer front ARB
Lower steer ratio

Baseline Setups

Select a car for baseline values.

Cold Pressure Guide

Ambient	Cold PSI (Dry)
15-18°C	26.0 - 26.5 PSI
19-24°C	25.5 - 26.0 PSI
25-30°C	25.0 - 25.5 PSI
30°C+	24.5 - 25.0 PSI

Car-Specific Data

Reference for all GT3 cars.

Car	Min Front RH	Min Rear RH	Brake Bias Min	Steer Ratio Min	Typical Rake
AMR V8 Vantage GT3	53mm	53mm	57.0%	14	20-35mm
AMR V12 Vantage GT3	55mm	55mm	57.0%	14	20-35mm
Audi R8 LMS / Evo / Evo II	54mm	54mm	50.0%	12	5-15mm
Bentley Continental GT3	54mm	54mm	57.0%	10	20-35mm
BMW M4 GT3	50mm	50mm	48.5%	10	20-35mm
BMW M6 GT3	52mm	52mm	47.5%	10	20-35mm
Ferrari 296 GT3	50mm	50mm	50.0%	13	10-20mm
Ferrari 488 GT3 / Evo	55mm	55mm	47.0%	10	5-15mm
Honda NSX GT3 Evo	54mm	54mm	44.0%	10	15-25mm
Lambo Huracan GT3 / Evo / Evo2	54mm	54mm	50.0%	10	5-15mm
Lexus RC F GT3	50mm	64mm	50.0%	11	20-35mm
McLaren 720S GT3 / Evo	50mm	64mm	47.0%	11	15-25mm
Mercedes-AMG GT3 / 2020	42mm	67mm	50.0%	11	20-35mm
Nissan GT-R GT3 2017/2018	55mm	55mm	47.5%	12	15-25mm
Porsche 991 GT3 R	60mm	60mm	43.0%	11	15-25mm
Porsche 991II GT3 R	53mm	55mm	43.0%	11	15-25mm
Porsche 992 GT3 R	53mm	55mm	43.0%	11	15-25mm

Tyre Pressure Minimums

All GT3: 20.3 PSI min | All GT4: 17.0 PSI min

Xbox Notes

Physics are 100% identical to PC. All parameters are the same.