i've been a Vittoria fan but my experience with their graphene tyres isn't very good.. i just flatted a Corsa Speed clincher (rear) and the reason quite simply is it is wore out.. threads showing most of the way around the centre.. i have 1308 kms on it.. pressure usually about 125 psi..
and i have gone through 2 Corsa G+ tubulars as well.. in each case, they got about a 7mm split in the sidewall.. one front, one back and i'm pretty sure i din't run up against a curb or anything.. i haven't added up the distance but i would say about 400 kms on those.. (time trial bike) 145 psi in those.. i'm afraid to use them anymore