Is this possible? It would be nice to drive 3 stints of say 10 laps to see how the tyres are after, without getting new tyres between each stint.
Yes, as Michael, just pit while in practice for fuel leaving tyres unchanged to evaluate your tyre wear, temps etc etc.
True but you can't change setting to the car like camber when you only pit I thing.
But driving a practice event is boring but good for data information.