The 2005 Tranzam Sports Sedan Series was a national motor racing series sanctioned by the Confederation of Australian Motor Sport and open to drivers of:
Sports Sedans complying with CAMS Group 3D regulationsTransam cars complying with National Australian Sports Sedan Association regulationsTraNZam cars complying with TRG of New Zealand regulationsAustralian Tranzam cars complying with National Australian Sports Sedan Association regulations The series was contested over a five round series.
Round 1, Phillip Island, Victoria, 22 MayRound 2, Queensland Raceway, Queensland, 3 JulyRound 3, Eastern Creek Raceway, New South Wales, 24 JulyRound 4, Oran Park Raceway, Sydney, New South Wales, 18 SeptemberRound 5, Wakefield Park, New South Wales, 13 November