News Summary
- Pirelli has replaced Austin’s 2025 C1-C3-C4 selection with C2, C3 and C4 for the 2026 United States Grand Prix.
- The tyre supplier expects the C2 to support longer stints, although high temperatures could increase degradation.
- Resurfacing between Turns 9 and 11 adds another variable as teams prepare for a weekend without a sprint race.
Pirelli changes F1 tyre compounds for 2026 United States GP in Austin
Pirelli has confirmed a revised tyre selection for the 2026 United States Grand Prix, replacing the unusual compound combination used last year as Formula 1 prepares for another potentially demanding weekend at Austin’s Circuit of The Americas. The Italian manufacturer will supply the C2 as Hard, C3 as Medium and C4 as Soft, with high temperatures and tyre wear expected to influence race strategies.
The decision marks a return to a more conventional selection after Pirelli experimented with a gap between the Hard and Medium compounds in 2025. Last season, the C1 was nominated as the hardest tyre alongside the C3 and C4, but teams avoided using the C1 during the race and predominantly adopted one-stop strategies.
Pirelli initially announced the 2026 compound selection on October 9 and expanded on the technical implications in its October 20 race preview.
Why Pirelli has changed its Austin tyre selection
The principal difference concerns the Hard compound. By replacing the C1 with the softer C2, Pirelli has reduced the performance gap between the available compounds, giving teams a potentially more competitive option for longer race stints.
| Compound | 2025 | 2026 |
|---|---|---|
| Hard | C1 | C2 |
| Medium | C3 | C3 |
| Soft | C4 | C4 |
In 2025, 13 drivers adopted the Medium-Soft strategy, while Charles Leclerc was the only podium finisher to start on Soft tyres. The C1’s absence from the race demonstrated how little competitive value teams found in the hardest option.
For 2026, the C2 could provide the durability required for a one-stop race without the same performance penalty associated with last year’s C1. However, the supplier has warned that Austin’s typically high temperatures could accelerate degradation and make alternative strategies competitive.
Heat and resurfacing add uncertainty at Circuit of The Americas
Austin presents a particularly demanding combination of fast corners, rapid changes of direction and slower sections requiring strong traction. The opening sector places considerable stress on the front tyres, while acceleration out of slower corners in the final sector generates thermal degradation at the rear.
Although the circuit’s asphalt is not especially abrasive, Pirelli has identified tyre wear as a significant concern. A section between Turns 9 and 11 was resurfaced earlier in 2026, but the ageing asphalt elsewhere continues to contribute to high wear levels.
That distinction matters because tyre wear and thermal degradation are not identical. A compound may lose performance through overheating even before physical wear becomes critical, potentially forcing teams to adjust stint lengths or driving styles.
Pirelli expects the C2 to provide a strong foundation for longer runs, but the effectiveness of that strategy will depend on track temperatures and the behaviour of the current-generation cars.
Three practice sessions give teams more preparation time
Unlike the 2025 United States Grand Prix, this year’s event follows the traditional weekend format rather than a sprint schedule. Teams will therefore have three free practice sessions to assess tyre degradation, compare compounds and refine their setups before qualifying.
Each driver will receive two sets of Hard tyres, three sets of Mediums and eight sets of Softs for the weekend, with an additional Soft set reserved for drivers reaching Q3.
Friday’s long runs will be particularly important in determining whether the Medium-Hard combination offers the strongest race strategy or whether the pace advantage of the Soft can justify a different approach.
The United States Grand Prix takes place at the Circuit of The Americas from October 23–25, opening a three-race sequence that continues in Mexico City and São Paulo.
