Italian GP winner Verstappen in action in Monza - Day 1 of Pirelli's tyre test

Four teams completed programmes at the Autodromo Nazionale Monza today testing Pirelli's compounds for the 2026 season.

As GPblog reported earlier today, there has been a change of plans due to weather conditions in Italy, as heavy rain is expected for Wednesday morning.

This meant that Red Bull and Aston Martin were on track only over the morning, handing over the track to Williams and Racing Bulls in the afternoon this Tuesday.

After winning the Italian Grand Prix on Sunday, Max Verstappen first completed his programme using tyre compounds ranging from C3 to C6. The Dutchman's fastest lap time was a 1:24.117 on Lap 30, completing 59 laps in total.

After the reigning world champion handed the car over, it was Yuki Tsunoda's turn, who did 63 laps. His best time came on Lap 30, which was a 1:23.826.

They were joined by Aston Martin's Felipe Drugovich. The Brazilian completed 118 laps in total, setting his best, a 1:23.792, on Lap 37.

In the afternoon, Williams and Racing Bulls took to the track with Carlos Sainz and Isack Hadjar respectively.

The Spaniard did 49 laps, achieving his best on Lap 30 with a 1:22.388. The rookie completed 65 laps in total, achieving his best on Lap 41 with a 1:23.951.

These two teams ran the three fastest tyre compounds today, but not the C3.

Depending on the weather, Williams and Racing Bulls will be in action tomorrow as well. If it only rains in the morning, testing with slick tyres will follow in Monza in the afternoon.

Should there be more rain, the Italian manufacturer 'might take the opportunity to test the intermediate and wet tyres' to gather data related to the crossover point.