MclarenFan1991 wrote:so um why are they doing this night test? is just to test visibility, i dont see what the tyres have to do with it
They're testing in the desert, as it's still winter.
All that sunshine is good till you want to test wets, so wait till it's on the other side, soak the track and switch on the lights.
Zoomed, cropped and sharpened screengrab of the driver eval sheets briefly seen in one of the Pirelli YouTube videos.
(Based on an idea nicked from a @JHopePhoto tweet to @scarbs, but snagged from the 480P version).