Brawn, however, played down suggestions of an impending return to F1 and Ferrari, telling Italy's La Gazzetta dello Sport his trip to Italy this week was "never a secret".
And he told the BBC that he was at Ferrari "with a group of friends as part of a tour of Italy, no more than that!".
Brawn said the group, who are also visiting "as many vineyards as possible", drove Ferrari road cars around the Fiorano track.
A Ferrari spokesman confirmed that Brawn's visit was "simply an Italian fantasy tour with friends, scheduled for some time".