Forza Horizon 6 Tuning Guide: Initial Findings

Forza Horizon 6 introduces small but meaningful changes to handling, tuning, and upgrades. 

Upgrading Methodology

The core principles remain similar to FH5:

Keep cars within a class or two of their stock class.

Prioritize free parts and upgrades that unlock tuning (differentials, anti-roll bars).

Find the right tire compound.

Upgrade aero and suspension as necessary.

Spend as much PI as possible on weight reduction.

Use power upgrades to fill the remaining PI budget.

Conversions

Engine swaps remain powerful but are more situational. Weight balance plays a larger role. Engines that add weight require more consideration. Stock engines or lightweight swaps with high-rev power bands are generally preferred.

Aspiration swaps are similar to FH5. Centrifugal superchargers remain valuable when available.

Drivetrain swaps feel about as valuable as before. AWD swaps benefit certain situations, but RWD is competitive up to R class. AWD still dominates off-road.

Wide bodies are situational but often worth it in higher classes, offering stability benefits and wider tire options.

Aero

Adjustable front and rear aero is often preferred starting around B class. However, below A class, the drag penalty may outweigh the benefits. This is car-, class-, and track-dependent.

Tires and Rims: Major Change

Front tire width upgrades are now valuable. Bad tires feel worse; good tires feel better. If you lack grip, widen front tires instead of jumping to a full compound upgrade.

Compound guidelines:

Lower classes: Stock or street tires often suffice.

Mid classes: Rally and drift tires outperform sports tires. Semi-slicks become viable.

Higher classes: Semi-slicks and full slicks are valuable.

Key takeaway: Leave PI budget for at least one front tire width upgrade.

Track width is a cheap upgrade. Overall width increases grip. More front width improves turn-in. More rear width improves stability.

Drivetrain

Clutch is less valuable. Only upgrade if using automatic with stock or sport transmission.

Sport transmission unlocks final drive tuning. Race transmission converts to sequential/paddles; clutch is not needed even with manual-with-clutch.

Differential: Always install. Rally diff may feel better on road than race diff.

Platform and Handling: Brakes Now Matter

Brakes are now valuable. Bad stock brakes cause lock-ups, especially during rapid downshifts. Save PI for at least one brake upgrade on low- to mid-class cars.

Race suspension is a great upgrade. Anti-roll bars should always be installed. Chassis reinforcement feels more valuable than before for planted, grippy handling.

Weight reduction remains very important. Spend a large chunk of PI here.

Power Upgrades

Focus on exhaust first, then intake, ignition, fuel, and valves. Cams, turbos, and supercharger upgrades are situational. Use driveline, flywheel, and rim adjustments to fine-tune the last few PI points.

Summary of Changes

Tires and brakes are now more valuable, especially for lower-class cars.

Stability is a higher priority due to changes in grip, braking, and handling.

Fine-Tuning Settings

Tire pressures:

Rally and low-spec compounds: 26–28 PSI

Semi-slicks, slicks, drift: ~32 PSI

Gearing: Adjust final drive. Ensure enough top speed without bogging through corners. For RWD, lengthen lower gears for throttle control.

Alignment: All cars prefer less camber than default. RWD needs more front camber. FWD needs more rear camber. AWD prefers balanced setups. Use toe sparingly — front toe out for responsiveness, rear toe in for stability. Set caster to 7°.

Anti-roll bars: A wider range of setups works now. Use mechanical balance value (target 0.55–0.65). Softer front = more oversteer. Softer rear = more understeer.

Springs: Start with balanced setups. Softer overall provides more grip. If losing rear on corner entry, stiffen front.

Ride height: Max height still works but the gap to lower setups has closed.

Damping: Stiffer rebound (12–20) for less body roll. Softer bump (5–7) for bump absorption. Dropping front = oversteer. Dropping rear = understeer.

Aero: Target front/rear balance of 0.4–0.45. More downforce = more drag. Time attack cars use near-max downforce. Sprint cars use much less. More front downforce = oversteer. More rear downforce = understeer.

Brake balance: More front bias = stability and understeer. More rear bias = livelier but less stable. One degree makes a difference. Leave pressure at 100% most of the time.

Differentials:

AWD/FWD: Acceleration up to 95% max. Deceleration not below 5–10%.

AWD center diff: Never below 50%. 60–90% typical. Higher = more rear bias and oversteer.

RWD: Start with 50–60% acceleration. Deceleration at 10–20%.

Final Thoughts

Tighter tracks favor handling builds. The changes to braking, weight transfer, and mechanical grip encourage tuning for stability. Sprints and circuits still favor power. Forza Horizon 6 balances realism, freedom, and casual fun, and earning Forza Horizon 6 Credits efficiently will help you afford the builds described in this guide. Full in-depth guides will follow as the community discovers more.