I’ve just done my first track day and at Blyton too, last Thursday 8th April. I’ve a Evora SR on 20’’ rear and 19’’ front. I started the day running on cold setting pressures as recommended by the book. Ie 2.6 bar rear and 2.4 bar front.
It didn’t take long before the rears were at 2.9 bar and front 3 bar and the car was sliding a lot on the corners due to the increase in pressures.
I reduced the pressures to 2.6 bar rear and 2.4 bar front while the tyres were still warm and carried on enjoying the day with the pressures increasing to approximately 2.7 bar rear and 2.5 bar front due to the Corning speeds and it stopped it sliding in the corners too.
obviously this is still work in progress for when I do my next track day.
you will also need to check your wheel bolt torque settings after they’ve got hot to make sure they’ve not loosened off.
enjoy your track day, Blyton is a great track.
regards Will