| NBL champions | League champions | Runners-up | Finals berth |
| Season | Tier | League | Regular season | Post-season | Head coach | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Finish | Played | Wins | Losses | Win % | ||||||
| Bankstown Bruins | ||||||||||
| 1979 | 1 | NBL | 9th | 18 | 3 | 15 | .167 | Did not qualify | Shaun O'Connell | |
| 1980 | 1 | NBL | 12th | 22 | 3 | 19 | .136 | Did not qualify | Steve Fairnham Shaun O'Connell | |
| 1981 | 1 | NBL | 11th | 22 | 7 | 15 | .318 | Did not qualify | Steve Fairnham | |
| 1982 | 1 | NBL | 14th | 26 | 2 | 24 | .077 | Did not qualify | Robbie Cadee | |
| 1983 | 1 | NBL | 5th | 22 | 12 | 10 | .545 | Did not qualify | Robbie Cadee | |
| 1984 | 1 | NBL | 7th | 24 | 10 | 14 | .417 | Did not qualify | Robbie Cadee | |
| 1985 | 1 | NBL | 12th | 26 | 6 | 20 | .231 | Did not qualify | Robbie Cadee Claude William | |
| West Sydney Westars | ||||||||||
| 1986 | 1 | NBL | 4th | 26 | 15 | 11 | .577 | Lost elimination final (Illawarra) 86–105 | Robbie Cadee | |
| 1987 | 1 | NBL | 11th | 26 | 8 | 18 | .308 | Did not qualify | Mike Osbourne | |
| Regular season record | 212 | 66 | 146 | .311 | 0 regular season champions | |||||
| Finals record | 1 | 0 | 1 | .000 | 0 NBL championships | |||||
As of the end of the 1987 season
*Note: In 1983 and 1984, the NBL was split into Eastern and Western divisions during the regular season.
Source: West Sydney Westars Year by Year