Haas Team Principal Guenther Steiner has admitted that the team has not completely solved the brake issues which plagued them in the 2016 season.
Although the American outfit managed to post some strong lap times during this week’s testing, brake issues that the team faced last season have re-surfaced.
“We are not completely done with the brakes,” Steiner spoke.
“Our biggest problem is the inconsistency.
“So again, we have sometimes a brake that the drivers are really happy with, and then we get a set which we are not happy with. And we lose a lot of time.
“It is not only the time to change it, the driver loses confidence.
“Then, when you put the next one on, he needs to get into a state again that he is confident about what he gets. So we are not done with that yet.
“We had good brakes on Tuesday and good brakes [Thursday] but yesterday [Wednesday] that was one of our problems.”
The team experimented with using brakes from Carbone Industrie [CI] later in the season during the Brazilian Grand Prix.
Haas are due to undertake further tests with CI later during testing, as the team attempts to find a solution to their woes.
“We haven’t tested them [CI] enough to know if they are consistent or not,” Steiner added.
“We did a test last year but we haven’t come to a conclusion.
“We need to test them for this year, because we were late with the sign off and we have to produce new brakes because the discs are thicker and we haven’t got them yet.
“We will test them. We just don’t know exactly when or which race we will have them on.“