Monday, June 1, 2026

FIA Clears Red Bull in Front Bib Adjuster Investigation, Closes Tyre Cooling Case

The FIA has cleared Red Bull Racing following a detailed investigation into allegations surrounding its front bib adjuster, which had raised concerns of potential illegal manipulation during Formula 1 race weekends. Senior FIA officials conducted an investigation at the team’s Milton Keynes factory and found no evidence of wrongdoing, confirming that the team had used the device within the regulations.

The controversy began in the lead-up to the United States Grand Prix when rival teams raised suspicions that Red Bull’s front bib adjuster, designed to adjust the height of the car’s tea tray, could be used to alter the car’s aerodynamics between qualifying and the race—potentially violating parc ferme rules. In response, the FIA quickly added a seal to the device, ensuring teams could not adjust it once the cars entered parc ferme.

Despite this precaution, some competitors, including McLaren CEO Zak Brown and Mercedes team principal Toto Wolff, continued to press for further investigation into whether Red Bull had used the system illegally in previous races. The FIA initially stated that there was no evidence of rule violations and that proving any past infractions would be difficult. However, following further lobbying, the governing body launched a more in-depth investigation after the Brazilian Grand Prix.

The investigation, which involved a comprehensive review of Red Bull’s data, design blueprints, and interviews with relevant personnel, concluded that the team had adhered to all regulations regarding the front bib adjuster. The FIA confirmed in a statement that no breach had taken place, reaffirming its earlier stance during the US Grand Prix.

FIA

An FIA statement read: “The FIA regularly reviews and inspects the conformance of F1 teams to technical, sporting, and financial regulations. As part of this process, FIA technical representatives visited Red Bull Racing’s headquarters to investigate recent allegations regarding their front floor design. This investigation concluded that no breach had taken place, and therefore confirmed the position adopted by the FIA during the US Grand Prix.”

Tyre Cooling Allegations Closed

In addition to the front bib controversy, the FIA also addressed suspicions regarding possible tyre cooling tactics used by teams to gain a performance advantage. Allegations surfaced ahead of the Brazilian Grand Prix that some teams may have been injecting water into their tyres to cool them, thereby improving tyre performance during race stints. Reports of moisture and water marks observed in wheel rims after technicians stripped the tires following the Singapore Grand Prix fueled the suspicions.

The FIA conducted investigations during the Brazilian Grand Prix, with FIA single-seater director Nikolas Tombazis personally inspecting tyres and rims. FIA found no evidence of irregularities and concluded that no teams had breached the rules concerning tyre cooling.

“The FIA investigated recent allegations that competitors may have used water to manage overheating of tyres during the Brazilian Grand Prix,” the statement read. “No evidence was found to suggest any irregular behaviour. We consider both matters closed but will continue to monitor the situation in detail.”

With both the front bib adjuster and tyre cooling allegations now resolved, the FIA has reiterated its commitment to ensuring compliance with Formula 1’s technical and sporting regulations, while promising to continue monitoring potential issues in the future.

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