Jean-Eric Vergne bemoaned a ‘problematic’ Friday for Toro Rosso after practice for the Korean Grand Prix.
Vergne was fifteenth fastest in both sessions at the Yeongam circuit and says that the STR8 lacked balance.
“We had a problematic Friday, with the main difficulty having to do with the balance of the car,” said Vergne.
“We are not too sure what is the cause of these problems, so it will be a long night to study the data to try and find a solution. Strangely, the car felt better in the morning session.”
“We are not happy with where we are now, but I still believe the car can be much better here, so we just need to put everything together in the right way and try again tomorrow morning.”
Team-mate Daniel Ricciardo was seventeenth quickest in second practice but nonetheless believes that Toro Rosso can be competitive.
“Unfortunately we were on the back foot right from the first session, because the pace wasn’t there,” he said.
“We really thought we could cure it for the second session, but that wasn’t actually the case.”
“However, I still believe this is a track that should suit us, but we are leaving it to the last minute to be competitive tomorrow. It would have been nice to have a good Friday session, so now we just have to work hard to turn things around.”