FIA bans Boost Mode in wet conditions ahead of Miami Grand Prix
FIA cracks down on wet-weather power delivery
The FIA has introduced stringent new safety measures for wet-weather racing ahead of this weekend's Miami Grand Prix, with the most significant change being a complete ban on boost mode usage during rainy conditions.
Drivers will no longer be permitted to deploy the boost button, which provides up to 350kW of additional power, when racing in low-grip conditions. The governing motorsport body has implemented this restriction following mounting concerns raised by drivers regarding the aggressive torque characteristics of current hybrid power units in wet weather.
This specific change has emerged as part of a swathe of rules updates brought about by the FIA's April meetings with Formula 1 and its teams. The alterations have now been officially approved by the World Motor Sport Council.
Overtaking dynamics set to change
The new technical regulation explicitly states that boost mode "will be inhibited and is not allowed" during such conditions. This means overtaking will rely solely on pre-programmed engine maps rather than the sudden power differential that boost mode typically provides in dry conditions.
Further restrictions have also been placed on the Driver Adjustable Bodywork system, commonly known as active aerodynamics. The revised regulations permit only "partial activation" of the straightline mode in designated low-grip zones, severely limiting teams' ability to shed drag for overtaking in wet conditions.
These measures complement previously announced changes, including increased tyre blanket temperatures for intermediate compounds and modified battery deployment curves designed to improve initial grip and vehicle control.
Miami's weather threat looms large
The timing of these regulatory changes proves particularly relevant given Miami's weather forecast, which indicates a strong chance of rain for Sunday's race. Tropical conditions and rising humidity levels are expected to generate inland showers that could move towards the coast, potentially affecting the Hard Rock Stadium circuit.
Miami's strict lightning protocols add another layer of complexity to the weekend. Local regulations require the immediate suspension of outdoor activities when thunder or lightning is detected. Last year, similar weather threats prompted the FIA to warn teams that any lightning strikes during the race would trigger an immediate red flag.
These regulatory changes represent the FIA's ongoing efforts to balance competitive racing with driver safety in challenging weather conditions, ensuring that the spectacle of Formula 1 remains as safe as it is thrilling.
Simone Scanu
Heâs a software engineer with a deep passion for Formula 1 and motorsport. He co-founded Formula Live Pulse to make live telemetry and race insights accessible, visual, and easy to follow.