Pirelli axes C6 soft tyre for 2026 as new F1 era takes shape

Formula 1 will soon say goodbye to its grippiest dry tyre, as Pirelli has officially confirmed that the controversial C6 compound – the softest rubber ever brought to a Grand Prix weekend – will be dropped from its 2026 range.

Introduced mid-way through 2025 at Imola and later wheeled out for the street fights of Monaco, Montreal and Baku, the purple-walled C6 was meant to spice up strategy by opening a wider performance window.

In reality, it often proved too fragile for anything beyond a handful of flying laps and, crucially, sat too close in lap-time to the already-soft C5.

After crunching the numbers from an intensive development programme – including the final post-Mexican GP test – Pirelli has locked in its five-compound line-up for the start of the new technical era: C1 (hardest) through to C5 (softest). So, the C6 is gone for good.

Why the C6 Failed the Cut

In a statement released this week, Pirelli explained that the entire 2026 tyre range has been redesigned with one overriding priority: creating clear, predictable performance gaps between each step.

“Particular attention has been paid to performance differences between the compounds in terms of laptime, so as to ensure a wide and consistent delta between them, to deliver more strategy options,” the Italian manufacturer said.

“The decision not to validate the sixth and softest compound, the C6, was taken precisely because it was impossible to meet this delta requirement.”

Put simply, the data showed the jump from C5 to C6 was too small to justify carrying an extra compound, especially when every other step in the range now enjoys a healthier and more usable gap.

The 2026 tyres have been developed using projected car performance supplied by all ten teams, with downforce and speed forecasts for the end of the season rather than the beginning – ensuring the rubber will still be relevant as the new cars evolve.

Final Sign-Off Coming in Abu Dhabi

Teams will get their first proper taste of the new C2–C5 range next month. On the Tuesday after the Abu Dhabi finale, Pirelli will run a full-grid test day where current race drivers will jump into heavily modified 2025 ‘mule’ cars built to mimic expected 2026 loads.
Young and reserve drivers will continue running the existing spec in parallel.

For fans who loved watching drivers tiptoe around Monaco on the hypersoft-like C6, 2026 will feel different. Pirelli believes losing the softest compound will actually open the door to bolder, more varied strategies – proving once again that in modern Formula 1, less can sometimes mean more.

Read also: Pirelli mandates two pitstops for Qatar GP on safety grounds

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