Sainz completes test outing with Williams at Barcelona

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Ahead of his debut with Williams, four-time F1 race winner Carlos Sainz has completed a test outing with the Grove-based outfit, having racked up more mileages at the Circuit de Barcelona-Catalunya.

Following his debut run with Williams during last year's post-season Pirelli tyre test, Carlos Sainz was able to collect more mileages with the Grove-based outfit's 2023 F1 car as the British squad is ramping up its preparation for the upcoming season.

Williams travelled to the Circuit de Barcelona-Catalunya, home of the Spanish Grand Prix to complete a two-day test running under the Testing of Previous Cars (TPC) regulations. Williams started their on-track work on Sunday and brought the running with Sainz and his new team-mate Alex Albon on Monday to an end.

Sainz's former team, Ferrari was present at Montmelo last week, having complete a three-day test running with Lewis Hamilton, Charles Leclerc, Antonio Giovinazzi and Dino Beganovic.

Last week saw saw Pirelli complete a two-day test session at the Paul Ricard track which revolved around the development of the next generation of rain tyres.

Pirelli worked with McLaren at the Le Castellet circuit this week, putting its focus on the wet and intermediate tyres for the 2026 season, when the regulations will stipulate the same 18” rim diameter as the current ones, but with a slightly smaller width and external diameter on both the front and rear axles.

This week will involve another tyre test, with Pirelli set to complete a two-day test run with Ferrari and McLaren, trying out their new 2026 F1 tyres.