As Formula 1 gears up to undergo significant regulatory reform in 2017, speculation over its effects on car design and performance increases exponentially. We can anticipate reductions in downforce and drag; smaller and lighter cars; an increase of electric component power units as power sources; as well as new challenges posed to tyre performance that require innovative approaches to development of tires.
Pirelli, as the sport’s tyre supplier, has taken steps to adapt to these changes by designing new tyres with similar performance levels, degradation rates, and balance characteristics to those currently used. Unfortunately, however, their goal may prove challenging since 2026 cars will only become available for testing during pre-season sessions next February.
In lieu of testing with the actual 2026 cars, Pirelli has resorted to using mule cars—vehicles from the previous set of regulations that are not part of this year’s grid. This approach allows them to gather valuable data and insights into how future F1 tyres might perform under the upcoming regulations.
Mario Isola, Pirelli’s motorsport director, emphasizes the importance of simulations and feedback from team tests. Although direct comparisons with the future cars are not possible at this stage, working with modified current-generation cars offers a solid foundation for development. Pirelli’s strategy involves extensive collaboration with five teams so far—Alpine, Aston Martin, Ferrari, McLaren, and Mercedes—with Williams set to join them in Bahrain.
Pirelli aims to finalize its 2026 tyre construction by September, with hopes of having a near-final product by May. However, the challenge lies in accounting for expected differences in aerodynamics and loading without direct access to the new cars. The reliance on theoretical models and feedback from mule car tests is a testament to Pirelli’s adaptive and forward-thinking approach to tyre development.
The switch from 13 to 18-inch tyres a few years ago serves as a precedent for managing such significant transitions. Despite limitations, the use of virtual models and simulations has allowed Pirelli to refine their designs progressively. While there are still uncertainties, particularly regarding the performance of wet weather tyres, the collaboration between Pirelli and the teams through virtual testing and real-world feedback loops is essential for overcoming these hurdles.
2026 Tyre Changes for F1 The primary change for 2026 Tyres includes a decrease in width. Initial plans included plans to decrease diameter too; however, due to potential performance degradation it was decided against doing so and instead maintain the 18-inch diameter as this decision represents both innovation and maintaining F1 as one of the pinnacles of auto racing competition.
Pirelli has earned the respect of both Formula 1 race teams and fans through their commitment to rigorous testing on both slick and intermediate compounds, amassing an extensive test mileage total across both compounds. Their commitment is evident by amassing over 10,000 test kilometers for both types. Their dedication ensures reliable high-performing tyres for future generation vehicles in Formula 1. Through advanced simulation models coupled with ongoing rigorous tests they remain at the cutting-edge of tyre technology development across F1.