Japan Friday quotes: Williams

"We've tried out various set-ups today, which proved positive. The gap to the other cars is still very close though so we need to be a bit careful and plan well for qualifying. We'll have to see how tomorrow goes, but it looks like we're on the right track."

Nico Rosberg - 13th: "It's definitely going to be more difficult here than it was in Singapore for us. It was quite hard out there this morning in particular. We struggled with a slight lack of grip on the rear of the car and some oversteer, but we made good progress over the course of the two sessions and we ended this afternoon in a better position."

Sam Michael, Technical Director: "We had a productive day of practice today during which we went through the typical set-up changes for a Friday and worked through the usual programme of tyre compares between the prime and options under race conditions. We'll now work on qualifying set-up overnight ahead of qualifying tomorrow. No reliability problems at all."