Last updated: 3 July 2026

Forza Horizon 6 Tuning Guide Build Any Car Right

Tuning in Forza Horizon 6 lets you transform a factory car into something purpose-built — but the menu has dozens of sliders and it is not obvious which ones matter. This guide explains the tuning system from scratch, walks through what each setting does in plain language, and gives you safe starting baselines for road racing, Touge, drifting, and off-road. You do not need to understand all of it to start — even changing three or four settings correctly will make a real difference on-track.

01Upgrades vs Tuning: What Is the Difference?

FH6 separates two menus that new players often confuse: Upgrades and Tuning.

Upgrades (also called the Parts menu) add or swap physical components — engines, tyres, suspension, drivetrain, forced induction, weight reduction. Each upgrade raises your car's PI. Upgrades are permanent unless you swap them out.

Tuning adjusts the settings of the parts already installed — spring stiffness, damper rates, alignment, differential lock percentages, brake bias, tyre pressure. Tuning does not change your PI significantly (except aero adjustments). Tunes can be saved, shared with the community, and downloaded for free.

For most beginners, the correct order is: install upgrades to reach the PI class you want, then download a community tune for that class and race type. Manual tuning becomes valuable once you have a specific problem with a car's behaviour — for example, it understeers on Touge hairpins, or the rear breaks loose too early on drag launches.

02Key Tuning Settings Explained

You don't need to understand every slider. Here are the ones that actually change how a car drives:

• Springs (Front / Rear): Controls how stiff the suspension is. Stiffer springs (higher values) improve stability at high speed and reduce body roll. Softer springs improve grip on uneven surfaces and help weight transfer for drifting. Road racing wants stiffer; off-road and drifting want softer.
• Rebound Stiffness / Bump Stiffness: Controls how fast the suspension compresses (bump) and returns (rebound). Higher bump prevents the car from diving hard; higher rebound prevents it from bouncing back too fast. A safe baseline is slightly lower rebound than bump, so the car settles quickly without being bouncy.
• Anti-Roll Bars (ARBs): Resistance to body roll in corners. Stiffer ARBs reduce lean but reduce independent wheel movement — useful on smooth circuits, bad on rough cross-country terrain. Drift cars want soft ARBs for easier rotation.
• Alignment — Camber: How much the tyres tilt inward or outward when viewed from the front. Negative camber (tyres tilted in at the top) improves corner grip. Most cars benefit from -1.0 to -2.5 degrees front, -1.0 to -1.5 degrees rear. Too much negative camber reduces straight-line traction.
• Alignment — Toe: Whether the tyres point inward (toe-in) or outward (toe-out) when viewed from above. Toe-in rear improves stability. Toe-out front makes the car turn in more aggressively — useful for Touge and drifting.
• Differential Lock (Rear): The most impactful setting for rear-wheel-drive behaviour. Higher lock percentage makes both rear wheels spin together, which is good for drift entries and stable acceleration. Lower lock allows each wheel to spin independently, which gives better cornering grip. Drift cars typically run 55–75% rear lock on deceleration, 40–60% on acceleration.
• Tyre Pressure: Higher pressure makes the tyre contact patch smaller and stiffer (better on smooth roads, worse in the wet or on gravel). Lower pressure gives a larger contact patch (better off-road). For road racing, 28–32 PSI is a common starting point depending on the tyre type.
• Brake Bias: How much braking force goes to the front vs rear. More front bias increases stopping power but can cause the rear to step out. More rear bias makes the car rotate under braking (intentional for some Touge techniques). Default is typically 52–55% front.

03Baseline Tuning by Race Type

Here are safe starting points for each major race type in FH6. These are general guidelines — your specific car, tyre compound, and PI class will shift these values, but they give you a framework to tune from rather than starting blind.

Road Racing (Circuit and Point-to-Point): Springs: medium-stiff (S1 example: front 600–700 N/mm, rear 550–650 N/mm). ARBs: medium-stiff (front 18–22, rear 14–18). Camber: -1.5 front, -1.0 rear. Toe: 0.1 out front, 0.1 in rear. Rear diff: 55% accel, 20% decel. Goal: maximum corner grip and balanced handling.

Touge (Mountain Passes): Springs: slightly softer than road (weight transfer matters). ARBs: soft-medium to let the car rotate. Toe: 0.2 out front for sharper turn-in. Rear diff: 45% accel, 15% decel (avoid locking the rear too hard on tight hairpins). Brake bias: 56% front to help rotation on corner entry. Goal: the car should rotate willingly on hairpins without wanting to snap to oversteer.

Drifting: Springs: soft (front 300–450 N/mm, rear 280–400 N/mm). ARBs: soft (front 6–10, rear 4–8). Camber: -1.0 to -1.5 front, -0.5 rear. Toe: 0.3 out front. Rear diff: 60–75% accel, 50–65% decel. Traction Control: Off. Goal: predictable slides that hold angle without snapping.

Cross Country and Dirt: Springs: soft to absorb jumps. ARBs: very soft (front 4–6, rear 3–5). Tyre pressure: lower (22–26 PSI). Ride height: maximum or near-maximum. Rear diff: 30–40% accel. Goal: suspension travel over bumps without the car snapping sideways on landing.

Drag: Launch control ON. AWD or RWD with very high rear diff lock (80–90% accel). Rear springs stiff to resist squat. Camber: 0 front, -0.5 rear. Tyre pressure: 26 PSI for maximum contact. Aero: remove front splitter to reduce drag if top speed is the goal rather than launch.

04Community Tunes: The Right Starting Point

Before spending an hour manually tuning, check the community tunes library in the tuning menu. Search by the car's name and filter by race type. Sort by Most Downloaded or Highest Rated.

Good community tuners tag their setups clearly — 'Touge S1', 'Drift D-Class', 'Road Race S2' — so you can quickly find a tune matched to your intended use. Downloading takes seconds and is free.

When to move away from community tunes:

• The car still understeers on hairpins despite a 'Touge' tune — try reducing front ARB stiffness by 2–3 points.
• The rear snaps on corner exit — reduce rear diff accel lock by 5–10%.
• The car bounces on rough cross-country sections — soften both bump and rebound stiffness by 10–15%.
• The car doesn't rotate cleanly into drift entries — soften ARBs and add rear toe-out by 0.1.

These are targeted single-variable adjustments. Change one thing, test, then decide if you need another change. Changing multiple settings at once makes it impossible to know what helped.

05Upgrade Priority by Race Type

Upgrades raise PI and change a car's character. Here is where to spend first when building for a specific discipline:

• Tyres first, always. Stock tyres on any performance car hold it back more than any other single component. Sport or Race compound tyres are the single highest-value upgrade regardless of race type.
• Brakes second (for road and Touge). Race brakes reduce stopping distances dramatically on Japan's tight mountain roads.
• Engine for drag and straight-line events. Engine swaps or forced induction (turbo/supercharger) raise power and PI significantly — useful for drag builds where top-end power and launch are everything.
• Weight reduction for Touge and tight circuits. Removing weight improves every aspect of handling: braking, acceleration, and cornering. Race weight reduction is expensive in credits but worth it on a dedicated Touge car.
• Suspension for cross-country and dirt. Upgraded suspension increases ride height range and damping adjustability — essential for off-road builds that need to survive big jumps.

As a general rule: tyres and brakes first, then decide based on the race type. Avoid installing every available upgrade if it pushes your car's PI into a class you don't want to race in.