FH6 Tuning Guide — Every Setting Explained
Tuning in Forza Horizon 6 is the difference between a car that fights you through corners and one that feels planted and fast. This guide explains every tuning setting, what it does, and whether you should go lower or higher based on your symptoms — no engineering degree required.
Skip the defaults
Auto-Upgrade sets stats to default values optimized for nothing in particular. Manual tuning — even small changes to tires and differential — immediately makes a car noticeably faster and more controllable.
The tuning order
Always tune in this order. Each layer affects the next:
- Tires — compound and pressure. Biggest single impact on handling.
- Suspension — springs, dampers, anti-roll bars, ride height
- Differential — how power splits between wheels
- Brake balance — front vs rear braking bias
- Gearing — final drive and gear ratios
- Alignment — camber, toe, caster (fine-tuning last)
- Aero — downforce front/rear (high-speed cars only)
Tires
Tire pressure
Front and rear · measured in PSI · affects grip and wear
SettingLower value →Higher value →
Front pressure
More mechanical grip, slower steering response
Sharper turn-in, less peak grip
Rear pressure
More traction, more understeer tendency
More rotation, oversteer risk
Starting point: 28–32 PSI front and rear for road racing. Drift builds: raise rear to 35–40 PSI. Cross-country: drop both 2–4 PSI for more grip on loose surfaces. Always test in Rivals before committing.
Suspension
Springs & ride height
Controls body roll, cornering stability, and ground clearance
SettingSofter / Lower →Stiffer / Higher →
Spring stiffness
More body roll, better bump absorption, good for dirt
Less roll, sharper response, good for tarmac
Ride height
Lower center of gravity, better aero, harder to ground
More clearance for off-road and rough terrain
Anti-roll bars
More rotation through corners, looser feel
More stability, flatter cornering, can cause understeer
Road racing: lower ride height as far as possible without grounding, stiffen springs 20–30% from default. Off-road: keep ride height at stock or raise slightly. Soften anti-roll bars front and rear to help the suspension articulate on bumps.
Dampers (rebound & bump)
Controls how fast the suspension moves — independent from spring stiffness
SettingLower →Higher →
Rebound stiffness
Suspension extends faster, can cause bounce
Suspension extends slower, more controlled
Bump stiffness
Suspension compresses faster, absorbs bumps well
Suspension compresses slower, firmer over bumps
Rule of thumb: rebound should be slightly higher than bump (roughly 3:2 ratio). For a 5.0 bump, try 7.0–8.0 rebound. Avoid maxing either — the extremes feel unnatural and are hard to control.
Differential
Differential (diff) — the most impactful single setting
Controls torque split between wheels · affects traction and rotation heavily
SettingLower % →Higher % →
Front accel
More understeer on throttle, safer for beginners
Better front traction on throttle exit
Rear accel
Rear spins up easily, more rotation, drift-friendly
Better traction on exit, locks up rear diff
Rear decel
Easier trail braking, looser entry
More stability on braking, can cause snap oversteer
Road racing RWD: try rear accel 25–35%, rear decel 15–20%. AWD: front accel 25%, rear accel 30–40% for balanced power. Drift builds: lower rear accel to 15–20% and raise rear decel to 30%+ for sustained slides.
Brakes & gearing
Brake balance & gearing
Bias and ratio tuning for specific event types
SettingLower →Higher →
Brake balance
More rear braking — helps trail brake but risks spin
More front bias — safer, less rotation on entry
Final drive ratio
Lower ratio: more top speed, slower acceleration
Higher ratio: quicker acceleration, lower top speed
Starting brake balance: 50% front. Move toward 45% if you want more rear rotation for trail braking. Gearing: tighten ratios for short circuits, open them for Japan's long freeway stretches.
Common problems & fixes
Car understeers badly
Lower front anti-roll bar, soften front springs slightly, reduce front tire pressure 1–2 PSI, lower front differential accel
Car spins out on exit
Raise rear differential accel %, stiffen rear anti-roll bar, increase rear tire pressure, or switch to a softer rear tire compound
Car bounces over bumps
Reduce bump damping stiffness, soften springs, check ride height isn't too low for the track surface
Too slow out of corners
Raise final drive ratio for more acceleration, check differential rear accel isn't too low causing wheel spin
Car snaps in fast corners
Lower rear decel differential, stiffen front anti-roll slightly, increase rear ride height 0.5cm
Can't keep drift going
Lower rear accel differential to 15–20%, raise rear tire pressure to 35–40 PSI, soften front suspension for more steering angle
Use Rivals mode to test tunes
Before committing to a tune for races, run the same section of road 3–4 times in Rivals mode. Small changes feel obvious in direct comparison. Change one setting at a time — multiple changes make it impossible to know what helped.