Kimi Raikkonen will switch back to Lotus's short-wheelbase configuration for the Abu Dhabi Grand Prix.
The team felt its long-wheelbase upgrade had been a key part of its return to form in recent races. But team boss Eric Boullier said Raikkonen felt more comfortable with the previous specification.
"He is trying because the last two races he was not 100 percent happy with his balance and he is just trying something different," said Boullier. "The first thing is to know where you, are so you obviously go back to back what you were doing."
Lotus trackside operations director Alan Permane said that Raikkonen would stick with the short-wheelbase car for qualifying and the race as the change had paid off in practice.
"He wanted to try the short-wheelbase car again as he felt its characteristics would suit this circuit," said Permane. "So far it all looks good and this configuration will be kept on his car for the remainder of the weekend. His long-run pace looks very encouraging on both [compounds of] tires."
Raikkonen was sixth quickest in Friday practice.