Known simply as "Brilli", his face had been permanently scarred in an accident during a Tour of Italy motorcycle race.
In 1929, still in the Alfa Romeo P2, he won the Circuit of Cremona and the Tripoli Grand Prix in Italian Libya.
Free practice had been scheduled from 11am to 1:50pm and Brilli-Peri, who knew the track well having won the race one year earlier, came to test the cars of his team, the Scuderia Materassi.
According to eyewitnesses, while negotiating a fast left-handed bend, the car bounced on the irregular surface of the track.
Brilli-Peri died at the age of 37 years; the stadium of his native city, Montevarchi, is named in his honour.