The 1985 Bendix Brake Trans-Am Racing Series was the twentieth running of the Sports Car Club of America's premier series. Buick, despite having notable success in 1985, would never see another Trans Am victory.
Results
| Round | Date | Circuit | Winning driver | Winning vehicle |
|---|---|---|---|---|
| 1 | 21 April | Firebird |  Willy T. Ribbs | Mercury Capri |
| 2 | 2 June | Sears Point | Willy T. Ribbs | Mercury Capri |
| 3 | 15 June | Portland | Wally Dallenbach Jr. | Mercury Capri |
| 4 | 22 June | Detroit | Elliott Forbes-Robinson | Buick Somerset |
| 5 | 7 July | Summit Point | Willy T. Ribbs | Mercury Capri |
| 6 | 14 July | Mid-Ohio | Wally Dallenbach Jr. | Mercury Capri |
| 7 | 21 July | Brainerd | Willy T. Ribbs | Mercury Capri |
| 8 | 4 August | Road America | Willy T. Ribbs | Mercury Capri |
| 9 | 10 August | Lime Rock | Paul Miller | Porsche Carrera |
| 10 | 25 August | Watkins Glen | Wally Dallenbach Jr. | Mercury Capri |
| 11 | 1 September | Trois-Rivières | Willy T. Ribbs | Mercury Capri |
| 12 | 8 September | Mosport | Wally Dallenbach Jr. | Mercury Capri |
| 13 | 15 September | St. Louis | Wally Dallenbach Jr. | Mercury Capri |
| NP | 28 September | Sears Point (Non-points special) | Willy T. Ribbs | Mercury Capri |
| 14 | 29 September | Sears Point | Elliott Forbes-Robinson | Buick Somerset |
| 15 | 3 November | St. Petersburg | Willy T. Ribbs | Mercury Capri |
Championship standings (Top 10)
| Pos | Driver | Points |
|---|---|---|
| 1 | Wally Dallenbach Jr. | 228 |
| 2 | Willy T. Ribbs | 212 |
| 3 | Tom Gloy | 170 |
| 4 | Elliott Forbes-Robinson | 123 |
| 5 | Chris Kneifel | 101 |
| 6 | Jim Miller | 93 |
| 7 | Paul Miller | 79 |
| 8 |  Eppie Wietzes | 70 |
| 9 | Paul Newman | 69 |
| 10 | Les Lindley | 56 |