Forza Horizon 6 Tuning Cheat
Sheet

Grip Comes from the Tire Contact Patch

Understeer vs Oversteer

The Four Corner Phases

A corner isn't one event — it's four. Different settings dominate each phase, so when you have a problem, diagnose where in the corner it happens first.

The Golden Rules

Drivetrain

• RWD (Rear-Wheel Drive): the engine sends power only to the rear wheels. Most sports cars and muscle cars. Tends to oversteer when pushed.
• FWD (Front-Wheel Drive): power goes to the front wheels only. Most economy cars and hatchbacks. Tends to understeer.
• AWD (All-Wheel Drive): power goes to all four wheels. Best traction off the line. Tends to feel "safe" but slightly understeer-biased.

Car & Setup

• Weight distribution (wd%): the percentage of the car's total weight sitting on the front axle. A 60% wd car has 60% of its weight on the front, 40% on the rear. Affects almost everything you tune.
• Front weight: shorthand for "weight on the front axle," calculated as total weight × wd% (plus any downforce). Used in damper calculations.
• Open-wheel car: formula-style race car where the wheels are exposed outside the body (Indy cars, F1-style). These have inherent understeer that needs compensating for.
• Era: what decade the car is from. Older cars need different (usually stiffer) chassis tuning because their original suspension was less capable.

Upgrades

Many tables in this guide are keyed to which upgrades you've installed. Forza has tiered upgrades (Stock → Street → Sport → Race), and each tier changes the car's behavior enough that the baseline numbers shift.

• Race suspension: the top-tier suspension upgrade. Unlocks full tuning sliders. Most tuning advice in this guide assumes you have this.
• Rally / Off-road suspension: alternative top-tier suspension for off-road/rally use. Different geometry — calls for different setups than race suspension.
• Chassis reinforcement: a body upgrade tier (Stock / Street / Sport / Race). Stiffens the frame. Stiffer chassis = needs less aggressive suspension tuning.
• Race brakes / brake bias / brake pressure: Race brakes is an upgrade that unlocks the tuning sliders for brake bias (front/rear split) and pressure (how hard they brake per trigger pull).
• Race differential: upgrade that unlocks tuning sliders for the diff. Rally diff / Off-road diff / Drift diff are alternative diff types with different default behaviors.

Suspension Terms

• Spring rate: how stiff a spring is. Measured in pounds per inch (lb/in) or kilograms-force per millimeter (kgf/mm). Higher number = stiffer spring = less compression for the same force.
• Bump damping: resistance to suspension compression (wheel moving up). Controls how the car handles hitting bumps and weight transfer onto a tire.
• Rebound damping: resistance to suspension extension (wheel moving down). Controls how the car settles after a bump or transitions off a tire.
• Ride height: distance from the chassis to the ground. Lower = better handling but less room for the suspension to compress.
• Bottoming out: the suspension reaches maximum compression and can't compress any further. The wheel becomes briefly rigid and loses grip catastrophically.
• Anti-roll bar (ARB): a bar connecting left and right wheels on the same axle. Resists body roll in corners. Only active when the car leans side-to-side.

Alignment Terms

• Camber: how much the tire leans when viewed head-on. Negative camber = tops of tires lean inward toward each other.
• Toe: how much the tires angle in or out when viewed from above. Toe-in = fronts of tires point toward each other.
• Caster: the backward tilt of the front suspension's pivot axis. More caster = more straight-line stability and more "self-centering" of the steering.

Driving Terms

• Trail braking: continuing to brake (lightly) as you turn into a corner, instead of finishing all braking before turn-in. Loads the front tires and helps the car rotate.
• Lift-off oversteer: the rear sliding when you suddenly release the throttle (lifting off). Caused by weight transferring forward and unloading the rear tires.
• Tire scrub: when tires are fighting each other (e.g., due to excessive toe), causing wear and lost top speed.
• Mechanical grip: grip from the tires and suspension — works at any speed.
• Aerodynamic grip (or "aero"): grip from downforce — only works at high speeds where there's enough airflow.

Differential Terms

• Open differential (0%): the two driven wheels spin completely independently. Mnemonic: "0% looks like an O = open."
• Locked differential (100%): the two driven wheels are forced to spin at the same rate.
• Limited-slip differential (anything in between): allows some independent rotation but locks under high load. The setting in Forza is essentially "how locked is it?"
• Acceleration setting: how locked the diff is when you're on the throttle. Affects corner exit.
• Deceleration setting: how locked the diff is when you're off the throttle (lifting or braking). Affects corner entry.

Tuning Direction Symbols Used Here

• ↑ / ↓ increase / decrease the setting
• + / − add / subtract from the current value
• ± "plus or minus" — either direction depending on context
• ∓ "opposite sign of ±" — if ± is positive, this is negative, and vice versa
• F / R front / rear
• D / P distribution / pressure (used for brakes)
• A / D accel / decel (used for differential)

Understeer Cards (car pushes wide, won't turn)

Oversteer Cards (rear breaks loose, snap or slide)

Other Problems

Parameter → Balance Direction Cheat Table

Each row shows whether increasing that setting pushes the car toward understeer or oversteer. Use this when the fix cards above don't quite cover your case.

Tune in this order. Each step assumes the previous ones are done — for example, you can't sensibly tune dampers before springs because dampers need to match the spring rates.

1. Test the car where you'll actually race it. A tune dialed in on an open highway will feel awful on a twisty circuit, and vice versa. Pick a track from the weekly challenges (or wherever you intend to compete) and run it as a Rivals event — that gives you a consistent environment with ideal weather, so you can isolate what's the car versus what's the conditions. Don't tune on roads that are nothing like your race environment.
2. Know your car. You need to know its drivetrain (does it drive the front wheels, rear wheels, or all four?), total weight, weight distribution (what percentage of weight sits on the front axle?), power output, the era it was built in, and what kind of suspension and tires are installed. These all change the right answers later — most steps below scale with these numbers.
3. Tires. Set tire pressures using the baseline table for your tire compound (Section 01). Front and rear usually match.
4. Springs. Spring rates roughly match weight distribution — heavier end gets stiffer springs (Section 02).
5. Ride height. Pick your height and commit to it before alignment (Section 03).
6. Alignment. Set camber (Section 04), then caster and toe (Section 05). Leave toe at 0 unless you have a specific reason; caster around 7.0 for most cars.
7. Anti-roll bars. Distributed from a base value based on car weight and weight distribution (Section 06).
8. Dampers. Calculated from springs and weight. Bump roughly two-thirds of rebound is a useful sanity check (Section 07).
9. Brakes. Bias and pressure based on car type (Section 08).
10. Differential. Accel and decel based on drivetrain and car type (Section 09).
11. Aero. Balance front/rear downforce around the 0.40–0.45 aero balance stat, then dial overall level (Section 10).
12. Gearing. Final drive scaled to your car's power vs the 400-hp reference (Section 11).
13. Test & balance. Drive several laps, find the worst handling problem, use Balance & Fix-It to address it. One change at a time.
14. Track-specific tweaks (optional). Once your car is working well, you can shift the whole tune slightly toward "more cornering grip" for technical tracks (softer everything, max aero, shorter gears) or "more straight-line speed" for fast tracks (stiffer, less aero, longer gears). Most players don't need this until they're chasing the last tenths of a lap time.

Base Pressures by Compound

Start here. Set front and rear to the same value unless you're applying a grip/speed bias.

Picking the Right Compound

Tight technical tracks generate more friction — they reward upgraded compounds. Tracks with long high-speed straights keep tires cool, so cheaper compounds are fine and you can spend your performance budget elsewhere.

Rough guide by Performance Index class:

• D and C class: stock tires almost always.
• B class: stock tires most of the time. Street tires can work for very tight technical circuits.
• A class: usually street tires at minimum. Heavier and older A-class cars want semi-slicks; lighter modern cars can manage on street.
• S1 / S2: typically semi-slicks or race slicks. Rally tires sit between sport and semi-slick in PI cost but offer cornering grip closer to slicks — worth experimenting with on light, powerful cars.

General rule: heavier cars need stickier tires to keep up on tighter tracks. Older cars also benefit from stickier tires to compensate for their inferior factory suspension.

Starting Point

Adjusting for Weight Distribution Changes

Other Adjustments

• Wider tires: add ~0.5% per 10mm of width increase
• Chassis reinforcement: Race reinforcement reduces front spring need by ~5.5%, Sport by ~2.75%
• Rally suspension: halve the race-suspension values above
• Off-road suspension: uses a different scale entirely — front 39–40%, rear 6–7% of available range

Minimum Ride Heights

Conventional approach: run at the minimum. Raise it if you bottom out, if the track is genuinely rough, or if you want to experiment with the fast-meta lifted setup.

Camber Ranges by Car Type (Race Suspension)

Toe

Caster

Caster Values

Starting Point

A typical modern road car (~3000 lb, 50/50 weight distribution) wants roughly 20/20 on the ARB sliders. Adjust from there based on:

1. Heavier car? Higher numbers across the board (more weight needs more resistance to roll).
2. Front-heavy car? Higher number on front. Rear-heavy? Higher on rear.
3. Car type? See the table below — different categories have very different stiffness ranges.

Mechanical Balance Target

Reference Ranges by Car Type

These are reference ranges, not slider values. Use them to sanity-check the numbers you land on after balancing the car — not as a direct lookup.

• Overall stiffness — how stiff the bars run as a pair. A high-stiffness car (Utility ~65%) is meant to feel noticeably stiffer than a low-stiffness one (GP Race ~18%). Use this to judge whether your total ARB level is in the right ballpark for the car type.
• Front higher than rear by (RWD) — how many slider points the front ARB sits above the rear at 50/50 weight distribution. Example: "1.00" means front ARB ≈ 1 point higher than rear. "0.35" means a much flatter split. Front-heavy cars push this gap up; rear-heavy cars pull it down or flip it.

Pattern to remember: older / heavier / softer-chassis categories (Utility, Street, Off-road) want stiffer bars with a bigger front-to-rear gap. Race-tier categories (GP, Prototype, Race Truck) want softer bars with a small, nearly flat split — their rigid chassis already does most of the roll resistance.

Adjusting for Weight Distribution Changes

How to Set Dampers

The big-picture approach: stiffer cars and heavier cars need stiffer dampers. Stiffer springs need stiffer dampers to control them. A car with 60% of its weight on the front needs stiffer front dampers than rear ones.

Start at the minimum bump value for your car type (table below), add a small amount based on how much weight is on the front, and use the "bump is 2/3 of rebound" rule to derive rebound. Rear values follow front values, adjusted up or down depending on whether your rear springs are stiffer or softer than the front.

Min Front Bump by Car Type

Rear Damper Offset (based on Front−Rear spring difference)

Adjusting for Weight Distribution Changes

Damper Behavior Reference

If you're confused about whether to soften or stiffen, here's the simple version — read your car's feel, then make the matching change:

• Car feels bouncy or floaty → increase rebound slightly (both ends, +0.2 to +0.3)
• Car feels twitchy or harsh over bumps → lower rebound slightly
• Front feels too stiff entering corners (won't bite, understeers in) → lower front damping (bump and rebound)
• Front dives heavily under braking → increase front bump (+0.3 to +0.5)
• Rear feels unstable / loose over bumps → lower rear damping
• Rear hops or spins on corner exit → lower rear bump
• Rear floats and won't settle mid-corner → increase rear rebound

Rule of thumb: rebound should stay noticeably higher than bump (the 40–70% ratio). If a fix would push bump above rebound, you're solving the wrong problem — check springs or ARBs instead.

Two Philosophies of Brake Bias

Starting Values by Car Type (Philosophy A — stability-first)

If you're not sure, start here:

Rally / Off-road suspension: subtract 4% from bias (more braking on front to compensate for the softer setup).

Diagnostic — Adjusting Brakes by Symptom

Starting Values (RWD)

These assume your car has the Race Differential upgrade installed, and Race suspension. Pick the middle of the range for your car type if unsure.

Common starting points:

• Modern road / sports / rally RWD: 55% acceleration / 15% deceleration
• Aggressive exit-speed RWD setup: up to 90% acceleration (requires good throttle control; issues appear above ~95%)
• Off-road car: 0–10% / 15%
• Prototype (LMP-style): 52% / 0%
• GP race car: 2% / 0%

Drivetrain Rules

The table above is for rear-wheel-drive cars. For others:

Tuning by Symptom

• Inside wheel spins on exit (wasted power): increase accel by 2–4%
• Rear breaks loose under power on exit: decrease accel by 2–4% (more open)
• Rear sliding when you lift off entering a corner: increase decel by 2–3%
• FWD car understeers on entry: decrease decel by 1–2%
• FWD car understeers on exit: decrease accel by 2–3%

Special Cases

Balance First, Then Overall Level

Drivetrain Tendencies (rough starting points)

These are starting biases before you check the balance stat.

Power & Weight Considerations

How to Choose Final Drive

Simple rule: the more power you have, the lower the final drive number you need. A 400-horsepower car with race aero is the baseline — that car wants final drive of 4.25. From there, every extra ~6 hp drops the final drive by about 0.01.

• 600 hp (200 hp over baseline): 4.25 − (200/6 × 0.01) ≈ 3.91
• 250 hp (150 hp under baseline): ≈ 4.50

Aero Offset (race gearbox)

More aero = more drag = need shorter gears (higher FD). Apply this offset to the formula above:

Off-road tires installed → add +0.10 to the aero offset.

Reference Final Drives for Other Setups

Manually Tuning Individual Gears (if needed)

If your build needs a fully custom transmission (which is rare on modern circuit-focused builds), here's the practical sequence:

1. Dial in 1st gear for launch. Find a flat stretch or use a Rivals event. Adjust either 1st gear or the final drive until launching produces a small amount of controllable wheel-spin. Too long and the car bogs before the powerband; too short and it just spins helplessly. This is especially important on AWD cars.
2. Set your target top speed using top gear. Find the highest speed you actually hit during a lap, then set top gear to extend 10–20 mph beyond that. This gives you headroom for slipstreaming without banging off the rev limiter.
3. Space the middle gears as a logarithmic curve. When you look at the gear ratio sliders on the screen, you want a curve that's more spread out at the bottom (1st-to-2nd is the biggest jump) and tighter at the top (last two gears can look nearly identical on the graph). The reason: air resistance grows exponentially with speed, so each higher gear naturally produces less acceleration even when ratios are similar.

Power Edge Cases & Chassis Effects

• ≥800 hp w/ standard race box: halve the power value before applying the formula (low-gearing → extra −1.00 to FD)
• ≤200 hp w/ standard race box: double the power value before applying the formula
• Chassis effects on FD: Drag −0.2, Off-road −0.1, Drift +0.1
• Drivetrain swaps: AWD swap stock 6-speed → −1.0 FD. RWD swap stock 6-speed → −0.5 FD.

• Older car = stiffer chassis tune, more conservative alignment & diff
• Race car = softer chassis tune, more locked diff (except Prototype/GP — those are stiff because of aero loads)
• Heavier car = stiffer springs and ARBs, more brake pressure
• More power = lower final drive, downforce considerations at the 400 hp and 800 hp thresholds
• Open-wheel = lower rear camber, more open diff (combats inherent understeer)
• Grippier tires = stiffer setup; lower-grade tires = softer. Ride height in FH is its own conversation — lifted is often the fast meta (see Ride Height section)
• Dirt = soft + understeer bias; Cross Country = stiffer + oversteer bias
• Grip track = soft + oversteer bias + short gears + max aero
• Speed track = stiff + understeer bias + long gears + min aero
• Cold or wet = softer setup, more understeer bias, lower brake/diff lock

Build & Upgrades (before you tune)

Drag tuning starts in the upgrade shop, not the tuning menu. The build is most of the work.

• Engine swap. Most stock motors aren't viable for serious drag. Pick a swap with high power potential that matches your target class. For fastest times overall, AWD swaps are generally quicker off the line.
• Drivetrain. AWD = easier, faster launches. RWD = more skill required but lighter and authentic to many builds. Pick based on whether you want pace or character.
• Power. Max out engine upgrades to the limit of your target class.
• Suspension. Rally suspension is usually a solid starting point for drag — despite the name, it works well in most cases, though not always. Try it first and swap if it doesn't suit the build.
• Sway bars. Install both front and rear.
• Weight. Reduce weight as aggressively as the class allows. Skip bracing — it adds weight for handling benefits you don't need on a straight line. Stock brakes are fine; saving those PI points for power/weight is usually a better trade.
• Drivetrain parts. Best clutch, best driveshaft. For transmission, the 4-speed drift box is easier to tune since it has fewer gears, but any race transmission lets you shift without clutching in.
• Differential: any two-way adjustable diff — the base options behave nearly identically in-game.
• Aero. Removing rear wings gives a tiny advantage. If you're not chasing the absolute best time, keep what looks right.
• Wheels. Check the weight before installing. Wheel weight matters more than most people realize — go for the lightest set you can find, kept at a small diameter.
• Tires. Drag compound, widest rear, skinniest front.

Base Drag Tune

These are starting values — gear ratios get refined on the strip afterward.

Initial Gear Ratios

Before the first run, just get the graph filled out:

1. Drag top gear all the way to the right of the gear-ratio graph.
2. Bring every lower gear up to meet it so the curve looks evenly distributed.

That's your starting point. The strip does the rest of the tuning.

Fine-Tuning on the Strip

Iterative process. Change one thing, run the strip, compare time.

1. Tune 1st gear for the launch.

   • If the car bogs off the line → shorten 1st gear (smaller increments — adjustments of ~5 ticks are often already too much).
   • If the car spins helplessly → lengthen 1st gear back.
   • Goal: leaves hard with controllable wheelspin, builds into the powerband immediately.

2. Tune 2nd and 3rd for the rest of the quarter.

   • Watch your RPMs as you cross the finish line.
   • If you're not at the top of 3rd as you cross → shorten 2nd and 3rd until you are.
   • Why stop at 3rd? Leaving 4th alone keeps the car usable on longer straights and roll races without retuning.