Max Chilton changes F1 chassis after "balance issues"

The Marussia driver suspects that balance issues with the chassis he has had since the Austrian GP have held him back.

But with his outfit having cured an electrical issue that forced the Red Bull Ring change in the first place, Chilton has reverted to that car in which he felt more comfortable earlier in the campaign.

"My season started off very good, we were pretty even in qualifying and races, but the last few have gone towards Jules [Bianchi]," he said.

"But we had to change chassis for electrical reasons, and we have had balance issues with it.

"The steering has never particularly been straight and it seems to go around lefts better than rights.

"We have managed to switch back here, so I hope this weekend will be a change in speed again and I can get back to where I know I can be."

Chilton said the balance issue with the car he has felt since Austria was noticeable, and has showed up in telemetry data too.

"I definitely felt it, and they can see it in the data," he said. "Hopefully it will change things around."