Felipe Massa says his lack of pace in Bahrain Grand Prix qualifying was the reason Ferrari put him on a different strategy to the rest of the front-runners.
The Brazilian made the surprise move of qualifying by taking the hard tire in Q3. He was sixth fastest, and will start fourth due to Mark Webber and Lewis Hamilton receiving grid penalties.
"I was not 100 percent happy with the lap times and [the chance] of fighting for pole," Massa said. "We were looking at two cars that would lose position [Hamilton and Webber] so one option was to watch and not go out.
"The other was to go out on the hard. I hope this is the right tire for the race tomorrow."
Massa also hopes that he will get an advantage from being on the hard tire for the opening stint of the race.
"The long run on the hard [in practice] was more consistent," he said. "The degradation's a bit better.
"It can be better to have the hard [in the first stint]. Maybe the start will be a little bit worse but we'll see how it's going to be."