There's only F1 topic on our tongues this week… Lewis versus Nico.

After their public spat in China, we want to know which are your all-time favourite F1 rivalries.

Does the battle of the Mercedes boys match up to the likes of Senna versus Prost?

Get involved by using the hashtag #F1rivalries on Twitter.

Image source, Getty Images

1. Lewis Hamilton (Mercedes) 68

2. Sebastian Vettel (Ferrari) 55

3. Nico Rosberg (Mercedes) 51

4. Felipe Massa (Williams) 30

5. Kimi Raikkonen (Ferrari) 24

6. Valtteri Bottas (Williams) 18

Andrew Benson
Chief F1 writer

Image source, Getty Images

"The build-up to this race has been all about Lewis Hamilton, one way or another.

"Whether it be the controversy over Nico Rosberg's allegations that Hamilton was selfish and backed his Mercedes team-mate towards the Ferraris in China last Sunday, or the faintly ridiculous farrago over Hamilton's spraying of champagne on a podium hostess, the world champion has been at the centre of things.

"Hamilton, though, is keen to stand apart from it all. He played both down on Thursday and says his mind is focused only on the job. He might have won in Bahrain last year, but for him it was an imperfect weekend - Rosberg was faster throughout. Hamilton wants to make amends by taking pole and dominating the race this time around."

Just to remind you that this weekend's action is live on BBC television, as well as the usual service on radio and online.

Video footage of FP1 and FP2 will be available today on this website using the tabs above, while you can also access the action using the Red Button. TV coverage is off at 11:55 BST.

Ian Fergusson
BBC weather presenter

"A bone-dry weekend in store, as might be expected. Friday will prove the hottest day - into mid-30s C by FP1, with mid-high 20s into evening. Saturday and Sunday will see maximums come down a bit - around 29-30C, and again into mid 20s through the evenings.

"The key issue will be the wind. This won't be a factor for Friday's sessions but will most certainly be a pain on Saturday. For FP3 and qualifying, it will be noticeably breezy with the attendant risk of sand and dust blowing on to the circuit and perhaps some dust haze issues evident too by qualifying.

"Sunday will remain pretty windy through the first half of the day, but by race start this won't be as much a factor - still breezy, but not markedly so."

Watch the full forecast here.

Formula1.com on Twitter: 20 MINS TO GO until the start of #FP1. Here's the scene at @BAH_Int_Circuit - air temperature is 32C.

Image source, Formula1.com

Andrew Benson
Chief F1 writer

"It's hot in Bahrain. That pretty much goes without saying. But whether the desert will have the same effect on compromising Mercedes' competitiveness as the tropics in Malaysia three weeks ago is another matter.

"The fact the race happens after nightfall cools things down but the season is too young to draw definitive conclusions about what certain conditions might mean for the relative pace of Formula 1's two fastest teams. One thing does seem clear, though. Night or day, it is time for Mercedes v Ferrari round four."

Image source, Reuters

Hello and welcome to BBC Sport's live text commentary on the opening practice sessions for the Bahrain Grand Prix.

The latest round of the 2015 season promises much, with Lewis Hamilton bidding to make it three wins out of four at the start of the season, Nico Rosberg under pressure to get to grips his Mercedes team-mate, and Ferrari seeking to prove that their Malaysia win was no flash in the pan.

It feels like a key weekend. First practice is off at 12:00 BST.

Throw an arm around a loved one and settle down.

Image source, Reuters

Image source, EPA

F1 has its faults. We all know that. 'Myriad' is the word that leaps easily to mind.

But when it comes to putting on one hell of a spectacle, there's not a lot in the wide, wide world of sport that can top it.

The picture above, taken yesterday evening in the Bahrain International Circuit paddock, is about as impressive and enticing as it gets.

I say we go in.