In additional to weight reduction, the P1 LM benefits on track from a 40% increase in downforce courtesy of an all-around more aggressive aero package.
But to McLaren's credit, and to contribute some veracity to the production street car label, they did drive to and from the 'Ring in the process of setting the lap time, which is just plain cool.
As usual, the "tire factor" is an underreported element of the story. Street legal track tires are the fundamental component that make these production car lap times possible.
In the case of the P1 LM and also the Huracan Performante, Pirelli's P Zero Trofeo R was assigned traction duties.
Enjoy the lap...