With the E60 M5 and the E63 M6 comes the need for tyres that can handle speeds over 300 km/h. I'm not sure but I think that the Continental Sport Contact 2 – M5 and M6 are deliverd with - are limited to 300 km/h. It's hard to find any 255/40 ZR 19 and 285/35 ZR19 tyres that are good for 330 km/h. Neither the Dunlop SP Super Sport nor the Michelin Pilot Sport is available in that size. I've read that the upcoming Aston Martin Vanquish S (Vmax 322 km/h) also has got 255/40 ZR 19 front tyres; what sort of tyres does Aston Martin use? Can other wheels be used? I welcome any suggestions.