The Tweaks You Need to Make to the Default F4 Setup in iRacing
Published on May 11, 2025
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:
Start with the Baseline
Baseline is neutral but conservative. Goals:
- More rotation on entry
- Less understeer mid-corner
- Better traction out of corners
1. Tyre Pressures
- Default: Too high
- Target: ~20.5–21.5 psi hot
- Improves grip, especially over race distance.
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.
3. Anti-Roll Bars (ARBs)
- Front: Soften slightly → better turn-in
- Rear: Stiffen slightly → less roll, better traction
4. Dampers
- Softer front bump: Better kerb compliance
- Stiffer rear rebound: More throttle stability
5. Gearing
- Adjust final drive for each track:
- Short tracks: Shorter ratio = better acceleration
- Fast tracks: Longer ratio = avoid limiter in 6th
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.
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.