Asked if the Japanese Grand Prix would be an interesting exercise, McCullough said: “It is because you've got stable aerodynamic regulations comparing where you are, which we always do – last year, this year. It's just mind-blowing sometimes in the data, but then you say, ‘Ah, you know, the difference in tyres’, and obviously that's to do with track temperature and wind. There's lots of factors.”
McCullough did acknowledge that if those external factors remain consistent with last year's Japanese GP, it will be a fair barometer.
He added: "Japan's going to be a very interesting one because it is exactly the same tyres, compounds, construction, aerodynamic regs – a proper read on where we are if the weather is the same, track temperature the same, the winds the same.”
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