F1 Bahrain testing insights: Pirelli’s Mario Isola reveals which teams focused on the full package. Pirelli’s Isola on F1 testing: not every team prioritized car and tire optimization.

The final day of testing at the Sakhir circuit in Bahrain marked the conclusion of an intense three-day session in which a massive number of kilometers were completed. By the end of Day 3, teams had collectively covered more than half the circumference of the Earth, and with the additional 20,693 km accumulated by all teams, Pirelli was able to collect data covering a total distance greater than the entire circumference of our planet, which is 40,008 km.

The predominant tire throughout the session was the C3, used for 61% of the total distance. In total, the eleven teams covered 41,366 kilometers over six days of testing. Across these sessions, 326 sets of slick tires were used, and when combined with those from the first round of testing, the total reached 591 sets of tires.

Tires take a back seat in the second session

Pirelli’s motorsport director, Mario Isola, expressed satisfaction with the work completed by the teams but noted that the focus had shifted. He explained that most teams, having brought car updates, preferred to concentrate on two main areas: power unit performance and aerodynamics, putting tire work somewhat to the side. “Generally, the final stages of testing are usually dedicated to optimizing the car-tire package, but evidently not all teams reached that point,” Isola remarked. Ferrari, for instance, did focus on this optimization, whereas teams like McLaren, Red Bull, and Mercedes opted to follow a different program.

Mario Isola also emphasized that the data collected was consistent. “Mechanical grip appeared good across all tire options, and no significant issues with graining or blistering were observed. The level of tire degradation is almost certainly higher during these test days compared to what we expect during an actual race in Bahrain, when track temperatures will be lower and the cars will be in a more advanced phase of development,” he noted.

Key themes for the 2026 season

One of the central themes for the 2026 season will be managing tire temperature balance between the front and rear axles, particularly with the first race in Melbourne approaching. “Reduced stress on the tires at a street circuit could require more careful preparation or differentiated use of tire blankets, especially during qualifying sessions,” Mario Isola explained. He added that it will also be interesting to observe in Australia how much teams have limited engine power during testing to avoid revealing their full potential to rivals.

Overall, Pirelli’s observations underline that while tire data remains critical, the focus of many teams during these Bahrain tests was on understanding the overall car package—balancing power unit performance, aerodynamics, and tire behavior—to be fully prepared for the opening races of the 2026 Formula 1 season.

The data suggests that while the tires are performing reliably, the true pecking order remains masked by conservative engine modes and unfinished setup work. As the circus moves to Australia, the focus will shift from raw endurance to the delicate art of tire management on a low-grip surface, where the work done—or ignored—in Bahrain will finally be put to the test.