Besides race pace will the tyres play a bigger factor than normal in the outcome at Silverstone according to Grandprix.com.
Some teams have expessed doubts about the Pirelli rubber.
Will it be wise to try and do just one stop? The new Silverstone surface's debut on Friday saw the F1 drivers struggle with extreme and highly visible wear on their 2019 Pirellis.
"It was a question of how far you dare to go with it," Renault technical boss Marcin Budkowski said.
Sebastian Vettel even gave it a number: "For us it was seven laps. Then there was nothing left."
His Ferrari teammate Charles Leclerc added: "I had so much degradation, graining and blistering on the front left tyre."
But Pirelli's Mario Isola is not overly alarmed, saying the wear should improve over the weekend as more rubber goes down.
"In 2017 during the Barcelona tests, we had a similar thing with the new asphalt there," he said.
Courtesy grandprix.com, Sat 13th July.