Pirelli faces a significant challenge for the upcoming Malaysian Grand Prix, forced to base its tyre compound selection on historical data due to the event’s late addition to the 2026 calendar. The race at the Sepang International Circuit was confirmed on July 26.
This left the tyre supplier with just over ten weeks before the race weekend, which begins on October 4. The compressed timeframe prevents Pirelli’s standard preparation protocol, which typically involves extensive lead time and on-site analysis for fly-away races.
The company confirmed it had insufficient time to dispatch personnel for crucial pre-event measurements. This includes assessing the asphalt’s abrasiveness and grip levels, which are vital for making a well-informed and safe tyre choice.
As a result, Pirelli has nominated its mid-range C2 (Hard), C3 (Medium), and C4 (Soft) compounds. This decision relies heavily on data from the last Formula 1 race held at Sepang in 2017, nine years ago.
“We are there since 2011 every year, so we have a good history,” stated Dario Marrafuschi, Pirelli’s Head of Motorsport. “2017 was the first year of the wider tyres, so the situation was quite similar to what we see today in terms of balance between tyre dimension and car concept.”
Marrafuschi, who took over from Mario Isola earlier this year, explained that data from 2014 to 2016 was less relevant. The 2017 race provides the most applicable baseline for the current generation of cars.
The choice for the C2, C3, and C4 compounds is considered slightly more aggressive than a conservative selection of the hardest compounds. Pirelli stated this aims to create a wider range of strategic possibilities and reduce the time difference between one and two-stop strategies.
The Sepang circuit is known for its abrasive surface, comparable to Bahrain, and high track temperatures which can exceed 50 degrees Celsius. These factors contribute to significant thermal degradation, a key variable for teams to manage throughout the weekend.
The 5.543km layout features a mix of long straights and high-speed corners, such as the sequence at Turns 5 and 6. These sections place high lateral G-forces on the tyres, particularly stressing the shoulder of the tyre where heat builds up.
Furthermore, heavy braking zones into corners like the final Turn 15 hairpin place substantial loads on the tyres. The combination of these factors makes Sepang a demanding circuit for tyre management.
Teams also face the challenge of having no recent data for their simulation models. Validating simulator correlation will be difficult before Friday’s practice sessions, which will be critical for understanding tyre degradation and performance on the resurfaced sections of the track.
The unpredictable tropical climate is another major factor. Sudden, heavy downpours are common in the region, which could necessitate a rapid switch to intermediate or full wet tyres and completely reset race strategies.
