Talk:Vanguard Challenge/@comment-114.125.171.63-20160910102629/@comment-28548945-20160911094903

if you red my post below you will find that having 59 PR on one car and a second car (any PR) is enough to unlock GT! Grand Tour.

so I don't see why 75% would not be possible if you have the Aventador R$ upgraded since that's a 59 PR car.