Personal reference for tuning cars and dialing in feel.
Editor’s Note (May 2026 Update): This reference guide has been completely refreshed to align with post-launch Forza Horizon 6 engine updates, verified competitive handling dynamics from the community, and the recent chassis physics patches.
Slider Reference
Quick notes on what each setting does and whether to trust real-world logic with it.
Tire Pressure — Compromised. Controls responsiveness and grip balance. Does not drive tire temperature the way physics predicts — setting pressure low doesn’t generate heat, setting it high doesn’t cool tires. Use as a responsiveness/grip dial. Higher = more responsive, less grip, stiffer feel. Lower = more grip, softer feel. Target PSI depends on compound, not a single flat number: stock/street/rally tires land around 26-28 PSI hot, semi-slicks/slicks/drift tires around 30-33 PSI hot. (You’ll notice the Starting-Point Tunes below already reflect this — Rally sits at 26-28, Drift sits higher.)
Gearing (Final Drive) — Real. Works as expected. Slide left for longer gears / higher top speed, right for shorter gears / faster accel. Adjust so you hit redline at the fastest point on the track. Swap to a Drag/Drift gearbox to drop gears into a tightly packed powerband if needed.
Camber — Real. Negative camber = cornering grip, less straight-line grip. Trust real-world ranges. -1.5° to -2.5° typical for road. Drift requires extreme front tilting to keep a flat steering patch.
Toe — Compromised / Specialty Use. Known to behave unpredictably in Horizon’s standard grip models. Leave at 0.0 for racing unless fixing a specific entry hesitation or running a dedicated drift alignment.
Caster — Real. More caster = more stability, more self-centering. 6.0-7.0° is usually better than default 5.0° to achieve aggressive dynamic camber under load.
Anti-Roll Bars (1-65 scale) — Opaque scale, Real behavior. Unitless numbers, but the direction is rock solid. Stiffen front = more understeer. Stiffen rear = more oversteer. Primary oversteer/understeer balancing tool. > 💡 FH6 Meta Shift: For competitive AWD lobbies, the extreme 1/65 ARB exploit (1 Front / 65 Rear) remains highly dominant to forcefully break standard AWD cornering understeer.
Springs (kgf/mm or lb/in) — Compromised / Bounded. Absolute values are mostly meaningless—Forza floors the minimum rates at values well above what the real car would use. Don’t try to hit real-world numbers. Tune ratios and front-to-rear balance matched to weight distribution. Watch telemetry for suspension travel.
Ride Height — Real. Lower = better cornering, scrapes on bumps. Higher = better for bumps/offroad, worse handling. Road: as low as possible. Rally/Cross Country: Max out height to exploit massive suspension travel over rough terrain.
Damping (1-20 scale, bump + rebound) — Opaque scale, Real behavior. Unitless numbers, probably normalized per-car. Rules still work:
- Rebound ≈ 1.5x bump — community testing has since confirmed this ratio (bump landing around 40-70% of rebound, ~60% as the common target), so treat this as settled, not a guess.
- Too soft bump = diving, bouncy
- Too stiff bump = skipping over bumps, loses grip
- Too soft rebound = oversteer on turn-in
- Too stiff rebound = understeer on turn-in
Aero (Downforce) — Real (Updated). Features the new Aero Balance scaling. Max for tight cornering tracks, min for top-speed tracks.
- AWD Meta Note: Keep front aero high, but drop rear wing downforce to the absolute slider minimum to kill straight-line aerodynamic drag. AWD platforms don’t need the extra rear-weight downforce to find exit traction.
Brakes — Real (Bug Fixed). > ⚠️ Notice: The legacy inverted brake balance slider bug from previous titles is officially fixed in FH6. The slider operates exactly as labeled.
- Balance 51-53% Front for most racing to handle high-speed forward weight transfer. Pressure 100% unless locking up constantly without ABS.
Differential (Accel/Decel %) — Real. Works like real LSD settings.
- 0% = open / 100% = welded
- Road racing RWD: 60% accel / 20% decel
- Road racing AWD: 45% accel / 0% decel (Front) || 65% accel / 15% decel (Rear)
- Center Diff (AWD only): Higher % = more power to rear. 70-75% for neutral road racing feel; 80-85% for offroad sliding styles.
- Drift: 100% accel / 100% decel
A Quick Sanity-Check Number: Mechanical Balance
Newer community guides have started using a single “Mechanical Balance” score — roughly 0.55-0.65 for road racing, with 0.60 as the common sweet spot — as a shorthand for how your ARB and spring balance nets out front-to-rear. It’s not a replacement for the ARB-first approach above; think of it as a second opinion. If your car feels balanced through the Fix-The-Feel sections but the number’s wildly outside that range, that’s a sign to double check something else (wrong suspension type, an upgrade you forgot about) rather than chase the number itself.
Fix-The-Feel: Understeer
Understeer on entry (won’t turn in as you brake):
- Reduce front tire pressure 1-2 PSI
- Soften front ARB
- Soften front bump damping
- Decrease front brake balance percentage (shift slightly rearward if locking front tires)
- Decrease front differential deceleration lock
Understeer mid-corner (pushes wide off the brakes):
- Stiffen rear ARB (or invoke the 1/65 exploit)
- Increase front aero / reduce rear aero downforce drag
- Reduce rear tire pressure
- Add more negative front camber
Understeer on exit (pushes wide on throttle):
- Decrease front differential acceleration lock
- Shift center differential balance more to the rear (AWD)
- Soften front bump damping
Fix-The-Feel: Oversteer
Oversteer on entry (rear steps out braking in):
- Increase rear tire pressure
- Soften rear rebound damping
- Increase front brake balance percentage
- Stiffen rear ARB
Oversteer mid-corner (rear loose through the turn):
- Soften rear ARB
- Reduce front aero or increase rear downforce
- Reduce negative rear camber closer to -1.0°
Oversteer on exit (rear steps out on throttle):
- Reduce rear differential acceleration lock
- Shift center differential balance more to the front (AWD)
- Soften rear bump damping or soften rear overall spring rates
Come hang out:
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Check out the Gazoo Racer Weekly Challenge: Two Meta Toyota GR86 Tunes: https://apexspeedcraft.wordpress.com/2026/05/24/how-to-conquer-the-gazoo-racer-weekly-challenge-two-meta-gr86-tunes-that-smash-the-playlist/
Starting-Point Tunes
Ballpark values. Absolute numbers matter less than the ratios and balance. Adjust from here.
Road Racing (AWD Meta Baseline)
| Setting | Front Axle | Rear Axle |
| Tire PSI | 28.0 | 27.5 |
| Camber | -1.8° | -1.2° |
| Toe | 0.0° | 0.0° |
| Caster | 6.8° | — |
| ARB | 1.0 (Minimum) | 65.0 (Maximum) |
| Rebound | 13.5 | 13.0 |
| Bump | 5.4 | 5.2 |
| Aero | Max Downforce | Minimum Downforce |
| Brake Balance | 52% Front | — |
| Brake Pressure | 100% | — |
| Diff Accel | 45% (Front) / 65% (Rear) | Center: 75% Rear |
| Diff Decel | 0% (Front) / 15% (Rear) | — |
Rally / Dirt Track
| Setting | Front Axle | Rear Axle |
| Tire PSI | 24.5 | 24.0 |
| Camber | -1.5° | -1.0° |
| Toe | 0.1° Toe-Out | 0.0° |
| Caster | 6.5° | — |
| ARB | 12.0 | 22.0 |
| Springs | High (65-75% Up) | High (65-75% Up) |
| Rebound | 10.5 | 9.8 |
| Bump | 4.2 | 3.8 |
| Aero | Moderate-High | Moderate |
| Diff Accel | 50% (Front) / 85% (Rear) | Center: 70% Rear |
| Diff Decel | 5% (Front) / 10% (Rear) | — |
Off-Road / Cross Country
| Setting | Front Axle | Rear Axle |
| Tire PSI | 22.0 | 22.0 |
| Camber | -1.0° | -0.5° |
| Toe | 0.0° | 0.0° |
| Caster | 6.0° | — |
| ARB | 10.0 | 12.0 |
| Springs | Maximum Height | Maximum Height |
| Rebound | 9.5 | 9.0 |
| Bump | 3.5 | 3.2 |
| Aero | Low | Low |
| Diff Accel | 50% (Front) / 95% (Rear) | Center: 80% Rear |
| Diff Decel | 0% (Front) / 10% (Rear) | — |
Drift (RWD Baseline)
| Setting | Front Axle | Rear Axle |
| Tire PSI | 30.0 – 32.0 | 35.0 -40.0 |
| Camber | -5.0° (Maximum) | -1.0° to -2.0° |
| Toe | 0.4° Toe-Out | 0.2° Toe-In |
| Caster | 7.0° (Maximum) | — |
| ARB | Max (~55) | Soft (10-20) |
| Springs | Firm Front | Softer Rear |
| Rebound | 11.5 | 10.0 |
| Bump | 4.0 | 3.5 |
| Aero | Max | Min |
| Diff Accel | — | 100% |
| Diff Decel | — | 70 – 100% |
Drag (Straight Line Strip)
Still accurate post-patch. The June 15 Series 2 update nerfed Drag Tire cornering grip, but only to stop people using Drag Tires in circuit/touge/time-attack events — actual drag-strip times and leaderboards are explicitly unaffected. If you’re tuning for the drag strip itself, the table below still applies. If you were borrowing a drag-tire tune for anything other than drag racing, that’s the build that needs to change, not this one.
| Setting | Front Axle Value | Rear Axle Value |
| Tire PSI | 55.0 PSI (Maximum) | 15.0 PSI (Minimum) |
| Camber | 0.0° | 0.0° |
| Toe | 0.0° | 0.0° |
| ARB | Minimum Stiffness | Minimum Stiffness |
| Springs | Stiff | Soft |
| Ride Height | Minimum Height | Slight Rear Raise |
| Aero | Absolute Minimum | Absolute Minimum |
| Gearing | Drift/Drag 4-Speed Gearbox | Tightly Packed Ratios |
| Diff Accel | — | 100% |
| Diff Decel | — | 0% |
Core Principles
- Ratios and balance matter. Absolute numbers mostly don’t. Don’t try to hit real-world spring rate values. Tune front-to-rear balance matched to weight distribution. Look at the live Miscellaneous tab to verify your Mechanical Balance indicator rests comfortably between 0.55 and 0.60.
- ARBs and diff are the most reliable sliders. Use them as primary tools for cornering balance and power delivery. They behave most predictably inside the physics engine.
- The 1/65 ARB split is real. If an AWD car refuses to rotate mid-corner, flatten the front anti-roll bar completely and max out the rear.
- Tire pressure is a responsiveness dial, not a thermal one. 32-34 PSI hot is the performance target regardless of what real physics would suggest. Drop drag rears to 15 PSI for raw launch traction.
- Damping balance matters more than absolute values. Always ensure your Bump Stiffness value stays at roughly 55% to 65% of your total Rebound Stiffness value to avoid losing tire-to-road contact.
- Alignment works like real life, except toe. Leave toe at 0.0 for pure grip racing. Use extreme front toe-out and rear toe-in exclusively to hold wide drift angles.
- Change one thing at a time. Always.
- If the car feels wrong everywhere, check upgrades before tuning. Wrong suspension type (race vs offroad), wrong tire compound, or unexpected weight distribution shifts from engine swaps will make any tune feel broken.
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