"Our newest five-star car, the McLaren 720S is the most exciting and entertaining car its maker has ever built. It’s packed with enthralling technology, and has a pace that saw it lap our benchmark handling circuit faster than its stablemate, the McLaren P1." - Autocar

I assume this is the lap they're talking about and here at the cars for comparison. I don't remember what kind of tires the P1 was on. They started doing tests towards the end with Trofeos, but the P1 may have been on Corsa in this test. I assume the 720S was on new Corsas.

 

1. Porsche 918 Spyder unknown 1:05.70 887 / 1665
2. McLaren P1 unknown 1:06.80 916 / 1490
3. Radical SR3 SL unknown 1:08.00 304 / -
4. Ferrari 488 GTB unknown 1:08.00 670 / 1535
5. McLaren 650 S Spider unknown 1:08.30 650 / 1471
6. Ferrari 458 Speciale unknown 1:08.30 605 / 1451
7. Mercedes-Benz AMG GT R unknown 1:08.30 585 / 1606
8. Ariel Atom 500 V8 unknown 1:08.40 481 / 550
9. Veyron 16.4 Super Sport unknown 1:08.50 1199 / 1888
10. Ferrari F12 Berlinetta unknown 1:08.60 740 / 1699
11. McLaren MP4-12C unknown 1:08.60 600 / 1434
12. McLaren 570S unknown 1:08.70 570 / 1462
13. Ferrari 458 Italia unknown 1:08.90 570 / 1497
14. McLaren MP4-12C Spider unknown 1:08.90 625 / 1512