Chinosi began his single-seater racing car career by driving in the Italian Formula Renault Championship with Prema Powerteam in 2005. The following season, Chinosi competed in both the Formula Renault 2.0 Italy and Eurocup Formula Renault 2.0 championships for RP Motorsport. He finished ninth in the Italian series standings, taking nine points-scoring positions in fourteen races, including a podium in the first race at Hockenheim. In the Eurocup, he was a guest driver at Misano.
