Regarding tyre race strategy here is Mario Isola`s thoughts about it:
https://www.motorsport.com/f1/news/sain ... 59/?nrt=54
"If they start the race with the hypersoft, the quicker strategy is two-stop, with two sets of hypersofts and one set of ultrasofts," said Pirelli motorsport manager Mario Isola.
I believe in that case they start on hypersoft, they put the ultrasoft in the second stint, and the hypersoft again at the end because the car is much lighter, and the drivers are able to control the degradation much better.
"If somebody outside the top 10 starts on the ultra, they can maybe try a one-stop strategy with ultra and soft. But on paper it's not the quickest one.
One stop, with the hypersoft and a very, very long stint on the soft, I don't think is a good strategy in terms of performance. There is the potential risk of blisters [on the soft] similar to what we saw in Monza and Spielberg."
Despite Pirelli's caution, it's clear that the majority of teams would prefer to stop just once, given the high value of maintaining track position at a street circuit where passing is difficult and the DRS effect not very powerful.
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Bearing in mind a one-stop race there could be some top teams opting to start on US tyres, don`t they? Delta time loss between HS and US is 7 to 8 tenths so we should see that if they try them in Q1 ...