I also created a giveway for the base game and others dlc :
base game : https://www.steamgifts.com/giveaway/Y2dSw/dirt-rally-20
DLC DiRT Rally 2.0 - Opel Manta 400 : https://www.steamgifts.com/giveaway/im9Sv/dirt-rally-20-opel-manta-400
DLC DiRT Rally 2.0 - H2 RWD Double Pack : https://www.steamgifts.com/giveaway/f2Lup/dirt-rally-20-h2-rwd-double-pack