Rear-Wheel Drive (RWD) cars in Forza Horizon 6 are a double-edged sword. On one hand, they give you incredible top speed, better weight distribution during acceleration, and unmatched agility in tight corners. On the other hand, if you treat the throttle like an on/off switch, you will end up facing the wrong way on the track before you even hit third gear.
Forza Horizon 6 introduced minor but highly impactful physics updates, especially regarding tire physics and brake locking thresholds. If you want to stop spinning out and start winning online lobbies, you need to master three specific areas: your upgrade path, mechanical tuning, and cornering technique.
1. Build and Upgrade Strategy: Stop Shoving 1,000 HP Into Stock Tires
The biggest mistake players make is buying a lightweight sports car, maxing out the engine swaps to hit 900+ horsepower, and leaving the tires at stock or street compound. In FH6, the game heavily penalizes mismatched grip-to-power ratios.
The Tire Width Rule
FH6 physics place a much higher value on tire width and tracking than previous titles. Instead of wasting Performance Index (PI) points pushing your engine to the absolute limit, allocate that budget to width.

• Always upgrade your rear tire width to the maximum available setting to create a larger contact patch for power delivery.
• Do not ignore the front tires. Adding at least one stage of front tire width improves turn-in crispness and prevents the front end from pushing wide (understeering) when you try to power out of a turn.

Structural Reinforcement
Install Race Anti-Roll Bars (ARBs) and Race Suspension immediately. Without these, you cannot access the tuning menus to fix the car's natural tendency to oversteer. Furthermore, prioritize Chassis Reinforcement upgrades; a stiffer chassis reduces unpredictable body roll, keeping your rear tires flat against the tarmac.
2. The Definitive RWD Grip Tune
Once you have the right parts installed, head to the custom tuning menu. Standard all-wheel-drive (AWD) tunes will completely ruin an RWD car. Use these baseline numbers to stabilize your rear end.
Tire Pressure & Alignment
Don't let your tires get too hot or overinflated.

• Set your cold tire pressure to 28.0 PSI in the front and 29.5 PSI in the rear.
• For alignment, run a conservative camber setup: -1.2° in the front and -0.8° in the rear.
• To stop the rear end from snapping out when you lift off the gas mid-corner, add 0.1° of Toe-In to the rear tires. This forces the rear wheels to point slightly inward, stabilizing the car along straights and during heavy deceleration.

The Differential Is Key
The differential dictates how much the rear wheels lock together. If it locks too quickly, both tires spin, and you slide.

• Acceleration: Set this between 65% and 75%. This allows enough slip to keep you tracking straight out of slow corners without completely sacrificing launch traction.
• Deceleration: Set this to 20% to 30%. A lower deceleration setting allows the inside wheel to rotate freely when you trail-brake into a corner, reducing lift-off oversteer.

3. Driving Technique: The 20% Throttle Discipline
To see how these adjustments play out, let's look at a concrete scenario using an S1-Class 1997 Toyota Supra RZ tuned to roughly 700 horsepower.

[Entry: Brake in a straight line] -> [Apex: Coast / Maintain 20% Throttle] -> [Exit: Roll into 100% Throttle]

Imagine approaching a sharp 90-degree right-hander at 120 mph. If you try to brake while turning, the rear weight shifts forward, the back tires lose their load, and you will spin out.
Step 1: Straight-Line Braking
Do 90% of your braking in a perfectly straight line before turning the wheel. Bring your speed down to roughly 45 mph while keeping the car stable.
Step 2: The Apex Coast
As you turn into the apex of the corner, completely release the brake and hold your throttle at just 15% to 20%. This small amount of gas keeps the engine engaged and prevents engine braking from locking up the rear axle.
Step 3: Progressive Rolling Exit
This is where most races are won or lost. Do not floor the trigger. As the car passes the apex and begins to straighten out, roll your throttle trigger smoothly: 40%... 60%... 80%... and only hit 100% once your front wheels are completely straight.
Maximizing Your Horizon Career
Mastering RWD cars isn't just about the satisfaction of clean driving—it's highly efficient for progression. Building high-performance RWD grip tunes through platforms like u4n allows you to dominate online road racing championships, which yield significantly higher payouts. Sweeping seasonal championships cleanly without relying on aggressive driving assists will maximize your income, netting you hundreds of thousands of FH6 credits per hour to fund your ultimate garage.