Paul Hembery: "A wet qualifying session meant that the drivers and teams were dealing with a lot of uncertainties, but they at least had relevant information from the wet running yesterday. The keys to a strong performance were ensuring that the tyres were operating within the correct temperature window, and...

Heikki Kovalainen - 11th: "It's disappointing not to make the top ten, but I just didn't have enough pace in the second session; it's as simple as that. The conditions weren't ideal, but it's the same for everybody and there was nothing wrong with the car so I can't have...

Sebastian Vettel - 3rd/2nd: "We knew it would be wet today and might be tricky. The main loss from the rain was that we didn't run on the 2014 tyres. Not many people went out this afternoon in order to save tyres for the weekend - it's a bit of...

Nico Hulkenberg - 10th/8th: "It was a strange Friday. It's difficult because we don't know how the weather is going to be over the rest of the weekend. If it is wet, as it was today, then the running we did was useful. But if it's dry then we don't...

Valtteri Bottas - 16th/16th: Net conditions throughout both practice sessions disrupted our running today but we still managed to try different tyre pressures and temperatures to gain some more information. We have a lot of work to do get the tyres in the optimum window, especially if it's going to...

Paul Hembery: "It was a tricky start to the weekend here at Interlagos, but the conditions we saw are likely to continue for the rest of the weekend, so it was useful for the teams to establish a wet set-up and assess the performance of the wet and intermediate tyres...