Pirelli to Remove Softest Tyre Compound for 2026 F1 Season
Pirelli will eliminate the C6, its softest tyre compound, for the 2026 F1 season after tests revealed an insignificant performance difference compared to the C5. This move aims to enhance distinctiveness between compounds and streamline tyre selection, aligning with the new technical regulations and optimizing performance for the next generation of F1 cars.
Pirelli has announced a significant change to its tyre compounds for the 2026 Formula 1 season, opting to remove the softest C6 compound. This decision follows recent tests that showed a negligible performance gap between the C5 and C6 prototypes, rendering the C6 largely redundant.
Why it matters:
- This adjustment will streamline the tyre selection process for Pirelli, potentially simplifying strategy decisions for teams and drivers while ensuring meaningful performance differences between the chosen compounds at each race weekend.
- It reflects Pirelli's ongoing commitment to optimize tyre performance and relevance in line with evolving F1 regulations and car designs, especially with the introduction of new technical rules for 2026.
The Details:
- Following the final tyre test session at the Mexico City Grand Prix, Pirelli confirmed that only the C1 through C5 compounds will be homologated for the 2026 season.
- Pirelli's press release stated, "The most recent tests showed that the time gap between the C5 and C6 prototypes was too small compared to the others, without offering any significant performance advantage."
- Currently, the 2025 slick tyre range spans from the hardest C1 to the softest C6. For each circuit, Pirelli selects three compounds based on factors such as track layout, asphalt abrasiveness, and weather forecasts.
- Development Process: Tyre development relied on forecast data from teams, using simulations for predicted loads and speeds by the end of the 2026 season. Objectives remained similar to current season goals.
- New Regulations Complication: The 2026 technical regulations, which include active aerodynamics and slightly narrower tyres, introduced additional variables to testing, making the process more complex.
- Pirelli noted that "tyres could not be tested on actual 2026 cars," requiring mule cars modified to emulate the next-generation car characteristics.
What's next:
The final day of 2026 tyre testing is scheduled for December 9th, shortly after the conclusion of the 2025 season. Teams will be supplied with C2-C5 slick compounds, and current drivers are expected to test these tyres using mule cars, providing crucial feedback before the official homologation on December 15th. This strategic change by Pirelli aims to deliver a more distinct and impactful range of tyres for the revolutionary 2026 F1 season.