Despite wanting to take a radical approach to this weekend's Indian GP, Jenson Button revealed he went back to the traditional on Friday afternoon.
Ahead of Friday's action the Brit spoke of his car's set-up, which said would be "completely different to any other race we have had the last couple of years."
However, instead of sticking with the new, he reverted to the old in Friday's second practice.
The McLaren driver finished the day 10th on the timesheets, 1.250s off the pace.
"We tried a number of different set-ups this morning - but I think our baseline was in the wrong place, so they didn't particularly work around this type of circuit," he revealed.
"So we reverted to more of a traditional set-up for the afternoon, and we developed the car over the course of the day, so we're now getting there, despite the setbacks of the morning.
"In a way that's positive, because it meant that we'd already been getting the best out of the car for the whole year.
"The tyres will be very interesting this weekend - the Prime tyre seems to last forever, while the Option tyre doesn't! There's a very big difference between the two tyre compounds so I think we'll see some very interesting strategies this weekend."