The Tweaks You Need to Make to the Default F4 Setup in iRacing

Get more grip, better rotation, and improved consistency with these simple changes

The FIA Formula 4 car in iRacing is growing in popularity, and for good reason. But the default setup? It’s stable — not fast.

Here’s what to change for more performance:

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📌 Start with the Baseline

Baseline is neutral but conservative. Goals:

• More rotation on entry
• Less understeer mid-corner
• Better traction out of corners

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1. Tyre Pressures

• Default: Too high
• Target: ~20.5–21.5 psi hot
• Improves grip, especially over race distance.

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2. Brake Bias

• Default: ~59.5%
• Try: 58.0%–58.5% front
• Helps with trail braking and rotation. Don’t go too far or you’ll lock the rears.

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3. Anti-Roll Bars (ARBs)

• Front: Soften slightly → better turn-in
• Rear: Stiffen slightly → less roll, better traction

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4. Dampers

• Softer front bump: Better kerb compliance
• Stiffer rear rebound: More throttle stability

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5. Gearing

• Adjust final drive for each track:
  • Short tracks: Shorter ratio = better acceleration
  • Fast tracks: Longer ratio = avoid limiter in 6th

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💡 Bonus Tip: Use AiDE for Easy Setup Help

AiDE lets you describe your handling issues and gives you setup solutions — no guesswork, no spreadsheet diving.

👉 Join the waitlist for AiDE

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🏁 Summary

Just a few tweaks to the F4 baseline can massively improve your confidence and lap times. Or let AiDE do the work for you, and focus on driving.