Nico Rosberg has blamed his poor qualifying for the United States Grand Prix on "underestimating" the conditions
The German was 14th fastest in qualifying after being knocked out in Q3 and will line up 12th on the grid thanks to penalties for Jenson Button and Esteban Gutierrez.
Rosberg believes he was not aggressive enough in the way he approached warming up the tyres, leading to him lapping half-a-second off team-mate Lewis Hamilton in Q2.
"We underestimated how bad it was going to be in qualifying," said Rosberg.
"Everybody in my group, as a team, we all just underestimated and were very slow because we did not work the tyres hard enough and they were not working properly.
"You just drop off the curve, it doesn't go anywhere and it's a complete mess to drive."
Rosberg is still confident for the race, stressing that the mistake in qualifying was partly down to focusing on race set-up.
While he accepts that the team could have done things in a different way to improve his qualifying pace, this would have compromised his chances for Sunday.
"Now we have the experience about the tyres, there are various things that could have been done to make the car faster today," he added. "But then it would be worse tomorrow, that is the compromise."
Rosberg is still hopeful he can make progress in the race, although he expects to rely on making up positions on-track and others hitting tyre problems given many drivers are set to make only one stop.
"I'll give everything to try and get a good start to make up positions," he said.
"Many people are going to be trying for the one stop, so it can be a bit of a train situation through the race.
"It's going to be tough because you can't really play around with the strategy.
"It's about the start, having good race pace and hoping that some people wear their tyres too much."
George Russell and Valtteri Bottas' collision at Imola on Sunday prompted fury in the Formula 1 paddock. But Russell's carefully-worded heartfelt statement later, acknowledging that his initial response was wrong, proved the right move
In Max Verstappen's Formula 1 career to date, he has been cast as the 'pretender', an acknowledged top-line performer without the car to regularly challenge Lewis Hamilton. But that no longer applies in 2021, and the start to the Emilia Romagna Grand Prix was the most telling signal yet of what we can expect from their duel this year
Ninety years ago, Rudolf Caracciola became the first non-Italian to win the epic Mille Miglia. We look at how he stacks up to the most famous pre-war ace Tazio Nuvolari, one of the drivers he beat on that day in 1931
Formula 1’s latest Imola adventure turned into an expensive trip for many teams due to several crashes throughout the weekend. While balancing the books is an added factor in 2021 with the cost cap, a few midfield teams have cashed in early on development investments
Rain before the start of the Emilia Romagna Grand Prix promised to spice up the action, and the race certainly delivered on that. Max Verstappen got the best launch to win from Lewis Hamilton, but both got away with mistakes that could have had serious consequences