Kimi Raikkonen suspects he might not have needed the final pitstop that cost him the lead of the German Grand Prix.
As rivals Sebastian Vettel and Romain Grosjean came in with around 20 laps to go for new mediums, Raikkonen stayed out and assumed the lead for Lotus.
But having last pitted during the mid-race safety car, Raikkonen ultimately stopped for softs 10 laps from the finish.
He subsequently reclaimed second from Lotus team-mate Grosjean, but fell one second shy of catching Vettel for victory.
"I could run longer and we had to think about if we should try to run until the end," said Raikkonen.
"But I had massive problem with the radio. I could hear the team but they couldn't hear me, apart from at two corners.
"I wonder if we should have gone to the end as the tyres were OK."