Charles Leclerc Tops Free Practice Under Scorching Sepang Sun

Charles Leclerc set the fastest time of the second free practice session at the Sepang International Circuit, venue of the Bahrain Grand Prix, with a lap of 1:37.528. Drivers were greeted by scorching conditions, with air temperatures reaching 38°C and track temperatures climbing to 54°C, figures that are likely to remain similar throughout the rest of the weekend.

Isack Hadjar finished FP2 in second place with a time of 1:37.627, while Lando Norris recorded the third-fastest lap with a 1:37.665. The reigning World Champion ran exclusively on the C4, the Soft compound for this weekend, using two sets during the second hour of running. Hadjar and Leclerc also set their best laps on a set of Soft tyres, although both drivers additionally used a set of Mediums during the session. No driver ran on the Hard compound today.

During the second half of FP2, every team focused exclusively on race pace work. Tyre management is expected to play a crucial role on Sunday and, for that reason, teams sought to gather as much data as possible ahead of the Grand Prix.

In FP1, held in slightly cooler conditions than those seen in the afternoon, almost the entire field split its programme between Soft and Medium tyres. Only Max Verstappen, Isack Hadjar, Arvid Lindblad and Franco Colapinto ran exclusively on the red-marked compound.

Verstappen ended the day at the top of the combined classification thanks to the 1:37.520 he set on the C4 during FP1. In the opening hour of running, the Dutchman completed 16 laps on his second set of Softs and seven on the first.

George Russell set the second-fastest time with a 1:37.903, recording his benchmark lap on Soft tyres after completing an 18-lap stint on a single set of Mediums. Hadjar finished third with a 1:38.303 and, like his team-mate, focused exclusively on evaluating the Soft compound, covering eight laps on the first set and 15 on the second.

Simone Berra – Pirelli Chief Engineer

“Track conditions played a decisive role in tyre behaviour throughout this opening day at Sepang. From the outset, grip levels were low due to dust on the surface and a particularly abrasive track that requires a significant amount of rubbering-in before it can deliver its full potential.

This had a clear impact on track evolution and lap times, to the extent that Friday’s fastest lap remained virtually unchanged between FP1 and FP2. The benchmark time was more than four seconds slower than the qualifying simulation reference, a mark that the cars may struggle to approach tomorrow.

The sessions were also characterised by high thermal degradation, generated by tyre sliding and the nature of the track surface, with a significant impact particularly during the long runs.

The absence of the forecast rain during FP2 allowed teams to complete a number of race simulations, enabling us to gather substantial data on the C3 and C4 compounds, which displayed very similar levels of performance in terms of both pace and degradation.

At times, the Soft proved more consistent than the Medium because its higher level of grip helps limit sliding and, consequently, heat generation. The performance delta between the two compounds is around half a second, in line with expectations. The Hard remains an unknown quantity, however, as teams chose not to use it and instead preserve their available sets for the race.

With degradation levels similar to those seen today, performance drop-off is between two and three tenths of a second per lap. As a result, Sunday’s race could be shaped by two or more pit stops, which was precisely the outcome we hoped to encourage through the compound selection for this event. Before defining a more precise scenario, however, it will be necessary to carry out a further analysis of the data collected throughout the day.”

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Written by

Jack Renn

Jack Renn is an editor at F1 Chronicle and a veteran motorsport journalist with 25 years of experience covering Formula 1 and international motorsport. A member of the Association Internationale de la Presse Sportive (AIPS), the global body representing accredited sports journalists, Jack has spent his career reporting from paddocks and press rooms across the F1 calendar. His work spans race analysis, technical insight, and in-depth features, giving readers authoritative coverage grounded in decades of firsthand experience at the highest level of the sport.

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