Philipp Lahm revealed the key to FC Bayern München's stunning recovery to pip Juventus to a place in the UEFA Champions League last eight was a cast-iron belief in their ability to score goals.

Trailing 2-0 inside 28 minutes on the night and 4-2 down on aggregate, Bayern had late goals from Robert Lewandowski and Thomas Müller - in the 90th-minute - to thank for taking the tie to extra-time. Thiago Alcantara and Kingsley Coman, who is on loan at Bayern from Juve, struck in the extra period to clinch a place in Friday's quarter-final draw, and Lahm told media he never lost faith in the team's ability to turn the tie around.

Question: Philipp Lahm, what was going through your head when you were 2-0 down?

Philipp Lahm: 'Now, it's going to be hard!'

Read: Bayern's stunning comeback

Question: Were you surprised by Juventus' approach?

Lahm: In the first half, our play wasn't how we had planned it. Normally, we can counter such good pressing very well. Against such a canny team, you can't make a lot of mistakes. We simply made too many, especially in the first half, and they were punished. But we knew that even at 2-0 down, we can score twice at home. Juventus were a little square at the back, and we were the fitter team at the end. With the fans behind us, we were able to turn the game around.

Question: What is that rollercoaster of emotions like when you are going out and then Thomas Müller comes around the corner?

Lahm: That's football, and it's all decided on the smallest details. We could have gone 3-0 down, but that didn't happen. At half-time, we got together and said that we mustn't concede another goal otherwise it was over. We always have the ability to score twice, even in the last ten minutes. Luckily, we were able to do that. It was also important that we never lost our heads.

Question: How important is it to have someone like Kingsley Coman up your sleeve?

Lahm: He's already helped us a lot this season. He's an important player regardless of whether he plays from the start or not. He plays at an unbelieveable tempo, particularly in one-on-one situations. It helps us, especially when other players who play in that position are injured. That is something we have always had a little bit of a problem with in recent years.

Gallery: The best pics of Bayern's triumph

Question: How much was Arturo Vidal a central figure in the comeback?

Lahm: Everyone played well, Arturo too. He's a worker who gives everything for the team and never stops running. He has that in his soul. He's simply a very, very good player.

Question: Pep Guardiola talked a lot before extra-time. What did he say to you?

Lahm: The coach talks a lot to us: before every game, at half-time and always during the game. It's important because we always fine-tune and tweak a couple of things. He is 100 per cent behind the team and always tries to optimise things. He did that before extra-time as well as at half-time in extra-time.

Question: Can this victory give even more to the team, because it's also a victory of character?

Lahm: Perhaps it can bring us even closer together, but you only really know that at the end of the season. Of course it's great when you turn things round from being 2-0 down and when players come off the bench and make the difference. It creates a positive atmosphere within the team. The way the bench celebrated tonight was great. We need each player. We're still in all competitions possible, so it's important that each player, whether he plays from the start or not, whether he's in the squad or comes off the bench, produces their best, even in training.

Read: Müller 'A lot can happen in football'

Question: Do you have a particular wish for the draw on Friday? What would you think of an all-Bundesliga duel with VfL Wolfsburg?

Lahm: I don't think it's good when two German teams meet each other. Germany would rather have different games, so that both teams can go through. We'll see. It was certainly a tough Last 16 tie against last season's runners-up. You saw in both matches that two good teams were up against each other and that only the smallest details decided it. Now we'll see what the quarter-final brings.

Question: Would you prefer to play Barcelona over two legs or rather over one in the final?

Lahm: You don't get to pick and choose, but if - and I say 'if' - we get to the final [then it would be there], because that's always the most beautiful thing.

Maximilian Lotz from the Allianz Arena