1985 Australian GT Championship
The 1985 Australian GT Championship was the eighth Australian GT Championship and the fourth to be decided over a series of races. It was open to GT Cars complying with Confederation of Australian [Motor Sport|CAMS] Group D regulations with Group B Sports Sedans and superseded Group C Touring Cars competing by invitation. The title was contested over six rounds from 24 March to 25 August 1985.
The championship was won by Bryan Thomson driving a Chevrolet Monza and a Mercedes-Benz 450 SLC Chevrolet
for Thomson-Fowler Motorsport.
The Australian GT Championship was discontinued after 1985 however the title was reinstated for 2005.
Schedule
| Round | Circuit | Date | Format | Race winner | Round winner | Round winning car |
| 1 | Lakeside International Raceway | 24 March | One race | Bryan Thomson | Bryan Thomson | Chevrolet Monza |
| 2 | Oran Park Raceway | 5 May | Two heats | Brad Jones Kevin Bartlett | Bryan Thomson | Mercedes-Benz 450 SLC Chevrolet |
| 3 | Winton Motor Raceway | 2 June | Two heats | Kevin Bartlett Kevin Bartlett | Kevin Bartlett | De Tomaso Pantera |
| 4 | Adelaide International Raceway | 30 June | One race | Bryan Thomson | Bryan Thomson | Chevrolet Monza |
| 5 | Calder Park Raceway | 11 August | One race | Kevin Bartlett | Kevin Bartlett | De Tomaso Pantera |
| 6 | Surfers Paradise Raceway | 25 August | One race | Bryan Thomson | Bryan Thomson | Chevrolet Monza |
Note : Rounds were run concurrently with those of the 1985 [Australian Sports Car Championship].
Points system
For rounds contested over a single race, i.e. Rounds 1, 4, 5 & 6, championship points were awarded on a 30-27-24-21-19-17-15-14-13-12-11-10-9-8-7-6-5-4-3-2 basis to the top twenty finishers in the round.For rounds contested over two races, i.e. Rounds 2 & 3, championship points were awarded by allocating race points on a 30-27-24-21-19-17-15-14-13-12-11-10-9-8-7-6-5-4-3-2 basis to the top twenty finishers in each race, aggregating the points from the two races and then dividing the result by two.