FIA bans boost mode in wet, tightens wing rules for Miami GP

The FIA tightened rules for the Miami Grand Prix, banning boost mode in wet conditions and limiting straight‑line wing activation. A new anti‑stall system will protect stalled cars, and the 150 hp boost cap stays in place. The changes target dangerous high‑speed incidents and improve safety.

Why it matters:

Limiting power‑unit assistance in low‑grip conditions reduces the risk of high‑speed slides, a factor in the Suzuka crash that injured Franco Colapinto and Oliver Bearman. Banning boost in the wet also helps keep the racing line clear, preserving safety without dulling the on‑track excitement.

The details:

• Boost mode ban in wet – The system is inhibited in low‑grip conditions.
• Straight‑line mode limited – Only partial activation of driver‑adjustable bodywork is allowed in low‑grip zones, limiting the front‑and‑rear wing opening.
• 150 hp boost cap stays – The extra‑horsepower limit remains to prevent dangerously high closing speeds.
• Anti‑stall start aid – A sensor‑driven system will move stalled cars off the racing line, protecting following drivers.
• Driver‑led revisions – FIA director Nikolas Tombazis said drivers urged qualifying tweaks and safety, shaping the final wording. The changes take effect at Miami.

What's next:

Teams must adapt setups for possible wet sessions in Miami and monitor how partial wing activation impacts straight‑line speed. The FIA will review data from the race and may fine‑tune the regulations before the next round, keeping safety at the forefront of the 2026 rule package.