1 | 1991 | Vallelunga | 17 | Roni Motorsport | Ralt RT23 | Cosworth DFV Mader | 8 | 7 |
2 | 1991 | Pau | 17 | Roni Motorsport | Ralt RT23 | Cosworth DFV Mader | 9 | 7 |
3 | 1991 | Jerez | 17 | Roni Motorsport | Ralt RT23 | Cosworth DFV Mader | 22 | 11 |
4 | 1991 | Mugello | 17 | Roni Motorsport | Ralt RT23 | Cosworth DFV Mader | 13 | 9 |