Fernando Alonso says Ferrari has made "very good progress" at Jerez but still refuses to measure the F150th Italia against its rivals. He finished the final day of the test in third place, but it was the 115 laps he covered and the long-run consistency of the Ferrari that most pleased the Spaniard.
"I'm very happy," he said. "After four days here at Jerez, no problems for Felipe [Massa], no problems for me, so we are doing some very good progress.
"We know that this year the tire consistency is not the same as last year. One of the biggest changes for 2011 is how the tires degrade, so we are working on that area. It's true that we found every day some new solutions we need to analyze. But obviously I will not tell you which tires I used for which run."
Alonso added that it's still too soon to try to judge Ferrari's competitiveness against the likes of Red Bull and McLaren, and that the aim for next week's Barcelona test will be more mileage.
"There is not much time to prepare, I think in three days' time we are in Barcelona ready for the test. We will keep focused to make the car very strong, to make more than 100 laps every day -- that's the target. To see performance of the car and to evaluate how competitive we are, we need to do it Sunday after the first race in Bahrain. Then we will say the car is good or the car is not so good.
"Until that point, our efforts are made to make the car strong. All the little problems that you can find in tests, the temperatures, whatever, this is the time to solve them."