Pirelli is satisfied with the tests of the C4 prototype compound

In Friday’s training for the Mexico City Grand Prix, Formula 1 drivers not only worked with the three main tire compounds C3, C4 and C5, but also tested a prototype of the C4 compound for next season. Pirelli chief engineer Simone Berra summarized the work done and assessed the performance of the tires.

Simone Berra: “After two consecutive sprint weekends, the Mexico City round is proceeding as usual, and Friday was mainly about evaluating the different setups we brought to this track.

In addition, we tested the new version of the C4 compound: each driver received two sets of tires that he could use at his own discretion. We thank all the teams for their support at this important stage of tire development, as it was not easy for them to find time for us in their very busy schedule.

We’ve collected a lot of useful information that will help you compare the current composition of Medium and the prototype. The data obtained will allow us to make a decision in the near future whether to include the new C4 compound in the number of tires we will use in 2024.

As for the remaining compositions, two factors had to be taken into account. The first was a rapid change in the condition of the track, which became covered in a layer of used rubber with each lap. The second factor was the weather in the second practice, which also affected the performance of the tires, especially in the long heats at the end, when air and track temperatures dropped significantly compared to the first session.

As expected, rubber granulation was an important factor, especially with the Soft compound and the left front tire. Rubber degradation will also be a factor that will certainly influence the choice of strategy.

In theory, the one pit stop strategy is the fastest, but two stops cannot be ignored. There is nothing stopping teams from developing both strategies and then making a choice during the race based on the performance of the tires in the first stint. It must be taken into account that the condition of the track will continue to improve, which will gradually reduce the risk of rubber granulation.”