Topspeed:
MKSGR:

Which tires did they use for the GTR and the turbo s. Probably the "special order" tires for the GTR and the PZero for the turbo s...

AMG GT R:
Driver: K. C. Colwell
Tyres: Michelin Pilot Sport Cup 2 ZP https://www.youtube.com/watch?v=l36XNHQvt08

Turbo S:
Driver: Tony Quiroga
Tyres: Pirelli P Zero Corsa PZC4 https://www.youtube.com/watch?v=RFxfmMwe89I

They had 4 or 5 drivers for this event...

At least the turbo s was on the new Corsa - would be more interesting to have the GTR time with regular tires though... These tires they used are not comparable to the Porsche tires at all.