Moved forwards from its more usual late-season slot, this year's Turkish Grand Prix posed no less of a challenge to the teams.
On paper Istanbul Park presents little to test the cars, being medium on downforce, brakes and tyre wear. But the track has its quirks - it runs anticlockwise and it barely used outside of the Grand Prix weekend. This makes the track green until it rubbers in, which exacerbates the lack of grip from the newish surface. Finding grip at this year's race weekend was complicated by cooler weather and overnight rain.
The track's layout features sequences of fast and slow corners, and while this implies high downforce, the long straights push the cars' set-ups back down towards the medium to low downforce end of the aero map.
Each sector is dominated by one type of corner with fast turns in sector one, straights in sector two and the slow chicanes in sector three. Thus a team's relative performance in each sector makes it simpler to asses its pace.