DIALED/RACING
Tuning Calculator · for Forza Horizon 6
Engine Online · Telemetry Ready
Top Speed Builds · Forza Horizon 6

Maximum velocity, zero compromise.

A top-speed tune isn't a road-race tune at a higher target. It's a fundamentally different setup engineered to eliminate drag and let your engine pull all the way to terminal velocity. Minimum aero, near-zero camber, tall gearing, fewer gears — every choice trades cornering for vMax.

Build Your Tune.
Enter your vehicle specs to generate a setup
// Adjust Parameters Change & regenerate
01 Your Car From the "My Cars" info card
Your Car
02 Your Build From the upgrade & tuning menus
Everyday
Off-Road
Specialty
// Join the Community
Show off your builds.
Post screenshots, drop share codes, and swap tuning tips with Forza Horizon 6 players in the Dialed Racing Discord.
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The Forza Horizon 6 Tune Calculator.

Built by tuners, for tuners · 100% free · No install

What this tool does.

Dialed Racing is a free Forza Horizon 6 tune calculator that generates complete car setups in seconds. Enter your car's weight, power, drivetrain, and PI class — pick what kind of racing you're doing — and get back a full tune: spring rates in lb/in, gear ratios with per-gear redline speeds, alignment angles, anti-roll bar settings, aero downforce, brake bias, differential lock percentages, and tire pressures.

The math behind every value comes from real chassis-tuning physics: natural-frequency targets for spring rates, geometric progression for gear ratios, weight-bias-driven corner-weight calculations. It's the same approach professional race engineers use, scaled to match what Forza Horizon 6 will accept in its tuning menu.

What you get

  • Spring rates calculated from your corner weights and a target ride frequency in Hz
  • Gear ratios that hit redline in top gear at your target top speed, with a per-gear speed table
  • Camber, toe, and caster capped to what your PI class can actually grip
  • Anti-roll bars matched to your spring rates and drivetrain
  • Tire pressure by compound — race slicks want higher PSI than street rubber, and the tool knows the difference
  • Aero, brakes, and differential tuned to your race discipline

Every Forza Horizon 6 race type.

Pick your discipline and the tune adjusts everything — ride height, spring rates, gear count, diff lock, aero. Different races genuinely need different setups, and a one-size-fits-all tune will lose to a specialist every time.

Supported race types

  • Road Race — paved circuits, multi-lap track racing
  • Street — point-to-point public roads, often at night
  • Dirt — dedicated dirt tracks with barriers, rally-style
  • Cross-Country — open off-road with shortcuts allowed
  • Trail — unpaved wilderness without guardrails
  • Drag — straight-line ¼-mile and ½-mile racing
  • Drift — drift zones and tandem battles
  • Touge — Japan's signature head-to-head mountain pass
  • Time Attack — single-car circuit hot-lapping
  • Top Speed — Goliath shortcuts, Speed Trap PR stunts, autobahn runs
  • General Use — balanced compromise for casual lobbies and open-world

How to use the calculator.

Step 1 — Find your car's stats

Open Forza Horizon 6, select your car, and go to the upgrade screen. Note the weight, power, weight distribution percentage, drivetrain, and PI class. For the ride height range, open Tune → Springs & Dampers and check the min/max values on the ride height slider.

Step 2 — Pick your discipline and tire

Use the pill selectors to choose your race type, drivetrain, performance class, and tire compound. Each option has a tooltip explaining when to use it — including the often-confused difference between Rally tires (dirt + tarmac compromise) and Off-Road tires (loose terrain only).

Step 3 — Generate, then dial in

Hit "Generate Tune." Copy the values into Forza's tuning menu. Drive a clean lap. If something feels off, every output value has a tooltip with a "if your car does X, change this" diagnostic — adjust ±10% in the recommended direction and try again.

How to fix common handling problems.

Fixing understeer (car pushes wide)

Understeer happens when the front tires give up grip before the rear. The car wants to go straight when you want it to turn. Common fixes: raise front tire pressure by 1-2 PSI, soften the front anti-roll bar or stiffen the rear, add more negative front camber, increase front aero downforce, or reduce front toe-in toward zero.

Fixing oversteer (car snaps loose)

Oversteer is the opposite — the rear tires let go first and the car wants to spin. Common fixes: lower rear tire pressure by 1-2 PSI, stiffen the front anti-roll bar or soften the rear, reduce differential accel lock by 5-10%, increase rear aero downforce, or add slight rear toe-in for stability.

Fixing snap oversteer on kerbs

If your car suddenly steps out when you hit a kerb, the rear suspension is rebounding too aggressively. Reduce rear rebound damping by 1-2 clicks. If it still happens, raise the rear ride height slightly.

Fixing wheelspin on corner exit

Wheelspin under power means the diff isn't locking the wheels together enough. Raise differential accel lock by 5-10%. If that doesn't fix it, lower rear tire pressure 1-2 PSI for more contact patch.

Frequently Asked Questions.

Is Dialed Racing really free?

Yes — completely free, no account required, no paywall, no ads in the calculator itself. Built as an independent fan project for the Forza Horizon 6 community.

Will this work for older Forza games?

The chassis physics are similar across Forza Horizon 5, FH4, and Forza Motorsport, so the calculator gives reasonable starting tunes for those games too. Some values may need slight adjustment for differences in each game's tuning model.

Do I need to install anything?

No. Dialed Racing runs in any modern web browser — Chrome, Firefox, Safari, Edge — on desktop, tablet, or phone. Just open the page and start tuning.

Will these tunes win me leaderboard races?

The output is a strong starting point, not a guaranteed leaderboard-winning tune. Top times require fine-tuning to your specific track, your driving style, and your input device. Use Dialed Racing to get to 95% of optimal in 30 seconds, then refine from there.

Why are some values different from in-game defaults?

Forza's default tunes are designed to be safe for any player — they're conservative. Calculated tunes assume you want sharper response and more grip, so they push values toward race-spec.

How does the ride height slider work?

Enter your car's in-game ride height range (min and max from the tuning menu), and the calculator picks a target position within that range based on your race type. After generating, you can drag the slider to fine-tune — and springs, anti-roll bars, camber, and aero will all coordinate to match.

What's the difference between Rally and Off-Road tires?

Rally tires are dual-purpose dirt + tarmac. Strong on dirt, acceptable on pavement — the all-around choice for mixed lobbies. Off-Road tires are heavier, deeper-treaded, and built for loose surfaces only. Use Rally for Dirt races, Off-Road for Cross-Country.

Can I use this on mobile?

Yes — the calculator is fully responsive. All tooltips work on touch devices (tap a tire or race-type pill to see its description), and the ride height slider is touch-friendly.

Ready to build your first tune?

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