Sebastian Vettel admitted that Q3 had been quite the roller coaster ride for Red Bull in qualifying on Saturday for the 2013 Belgian Grand Prix, and that it could all have gone very wrong and left him well down the grid for the start of tomorrow's race.

"In these conditions anything can happen," he agreed after finishing in second place in qualifying. "I'm happy today; the boys did a good job with the change from slicks to intermediates which got us an extra lap and it was a good day for the team."

But Vettel went on to reveal just what a mad scramble it had been for Red Bull, and indeed for all the teams up and down the F1 pit lane in Spa.

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"It wasn't clear if the first lap we did in Q3 was the lap on intermediate tyres, so it was hard to know where we were today," he explained. "We went out on slicks to start, which was quite entertaining as it started to rain pretty heavily.

"We then went onto intermediates and it still wasn't clear what would happen. It looked like there was more rain coming, so we all rushed to get a lap, but then it stopped and the circuit came back very quickly.

"The last lap tuned out to be the fastest with the circuit drying," he confirmed. "It was difficult to know how fast you could go, I saw Lewis catching and thought I could have gone a bit quicker here and there, but in the end it was quite close across the line."

Red Bull team principal Christian Horner described the session as "really tense and exciting" and was a happy and relieved man when his drivers had come out of it in strong positions for the start of Sunday's race.

"The boys did a tremendous job on the final turnaround in Q3 to get both cars back out on track so quickly, which enabled Mark and Sebastian to get three timed laps each," said Horner. "Their last laps were enough to put them second and third on the grid.

"Despite the opportunity to get everything wrong today, we managed to get most of it right," he added. "It's good to be starting second and third for tomorrow's race, which will no doubt see the weather play a part."

Vettel's team mate Mark Webber was satisfied with the way things had gone in qualifying and with his third place on the grid for what will be his final F1 Grand Prix at Spa-Francorchamps, a circuit he clearly adores.

"It was a difficult session to make all the right calls, but in the end I think we got most things right," he said. "I think it's very easy to look stupid in those conditions, but in the end we did most things pretty good I'd say.

"It was a ballsy thing to go slower on the second to last lap to save the tyres, when you're still not sure if the track will improve for the last lap, but in the end it worked out and I'm happy to be up there for tomorrow's race," he added.

Webber did admit that the intermittent loss of DRS - turned off by the FIA when the track was classified as being in a wet conditions - had thrown him a little. "It's a little bit bizarre with the DRS going on and off in the session, but it's the same for everyone," he pointed out.