Jim Thirkettle at Riverside International Raceway
Jim Thirkettle has made 6 NASCAR Cup Series starts at Riverside International Raceway since 1976, with 0 wins, 2 top-10s and an average finish of 18.0.
Totals at Riverside International Raceway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 6 | 0 | 0 | 2 | 0 | 18 | 15.8 | 8 |
Every start at Riverside International Raceway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| January 14, 1979 | 1979 Winston Western 500 | Winston Cup Series | 14 | 8 | 0 | Running |
| June 11, 1978 | 1978 NAPA 400 | Winston Cup Series | 13 | 9 | 0 | Running |
| January 22, 1978 | 1978 Winston Western 500 | Winston Cup Series | 22 | 17 | 0 | Running |
| June 12, 1977 | 1977 NAPA 400 | Winston Cup Series | 10 | 24 | 0 | Oil pump |
| January 16, 1977 | 1977 Winston Western 500 | Winston Cup Series | 15 | 16 | 0 | Running |
| June 13, 1976 | 1976 Riverside 400 | Winston Cup Series | 21 | 34 | 0 | Engine |