The Circuit de Barcelona-Catalunya is an ideal track for testing an F1 car - a wide range of corner types and speeds, plus some long straights leads to exciting racing.
The team has no visible aero updates this weekend, but there are a few parts on the car to continue the progress we've made in recent weeks.
On Friday, our aim was, as usual, to gather as much data as possible. After a lot of running on the Medium and Hard tyre in FP1, the focus in the second practice session was on our long running as well as doing some single laps on the Soft tyre. The conditions in Spain were sunny and hot, ideal for some track action.
At the start of FP2, George and Lewis put on new Mediums. Both drivers were quite happy with the balance of the W15 and found themselves at the top of the timesheets. However, both felt that there was even more potential to unlock in the car.
For the first time this weekend, our drivers then worked on the Soft tyre, putting in some single-lap work. After their first attempts, Lewis was again the fastest, while George's push lap was compromised by traffic. Because of the demands of the circuit, more than one lap on the Soft tyre would not bring any improvements - an important learning for the Team.
In the final part of the session, our team focussed on long runs again. George and Lewis first stayed on the Soft tyres and then switched to Mediums. As with our pace on the single lap, the long runs were looking solid.
Lewis topped the second practice session just 0.022 seconds ahead of Ferrari's Carlos Sainz. George finished P8, with more time to come. As each driver managed to do 28 laps, together with FP1, a lot of valuable information was gathered.