Teams charged with deceiving regarding 2026 vehicle information.

      "Some teams progress more effectively than others"

      Formula 1's exclusive tire supplier Pirelli is becoming increasingly frustrated as teams are said to deliver highly inconsistent performance data for their 2026 car simulations. As reported by Auto Motor und Sport, the Italian company requires precise figures to finalize next year's new-generation tire compounds, yet the data being provided varies significantly, leading engineers to suspect that some teams may be intentionally "bluffing" to safeguard their technical secrets.

      Teams are obligated to share estimated downforce, acceleration, and top-speed data based on their simulator results; however, Pirelli insiders have stated that the range of information received is much broader than anticipated. The report noted that "if the figures were to be believed, this would suggest substantial speed differences between the cars."

      Mercedes' engineering chief Andrew Shovlin commented that such inconsistencies are typical prior to a major regulation update. "This is almost always the case with new regulations," he explained. "Certain teams achieve development at a better pace than others. Those who feel particularly confident may wish to downplay their anticipated performance somewhat."

      Nevertheless, Pirelli has warned teams not to take the strategy too far. Underestimating downforce values could lead to tires that underperform under actual loads, while excessively conservative designs could result in compounds being too heavy or slow.

      Shovlin also mentioned that the variance is not solely strategic. "Some teams forecast where they believe they’ll be at the end," he said, "while others reflect their current standing." He added, "Given the way the regulations are structured, I don’t expect there to be much difference when we all hit the track together for the first time."