Brazil Friday quotes: BMW

"We did quite a lot of tyre evaluation as they are pretty soft and there is a lot of graining, and it is very difficult to do something against graining.

"They have done a very good job on re-surfacing the track. There are no bumps at all, and the track is very smooth. Normally when you put new tarmac down the bumps stay, but that is not the case here. It has made it easier to drive on, as the bumps were upsetting the balance of the car, but as before it is a nice track to drive on."

Nick Heidfeld - 10th: "In the afternoon I did many laps, 44 in total, and the car felt pretty good. We did a lot of comparisons and now have a good amount of information about the tyres. The softer compound tends to grain. The new tarmac is a clear improvement."

Willy Rampf, Technical Director: "Because we don't expect rain on Saturday or Sunday, we didn't do any running this morning as it didn't make any sense to send the cars out. In the second session we did the tyre evaluation with both cars.

"Now we will look into the data to make our tyre choice for qualifying and the race. Because of the changing track conditions the lap times were improving all the time, and this makes the data comparison very interesting. We had no technical problems."