| 23.8.1981 | 500 mile Road America | 25 | #WBS59910004301040 | Miller / Cowart | Red Lobster Racing | 34th |
| 23.8.1981 | 500 mile Road America | 40 | #WBS59910004301225 | David Deacon | David Deacon | DNS |
| 23.8.1981 | 500 mile Road America | 54 | #WBS59910004301027 | Garcia / Naon / Cruz | Montura Racing | 22nd |
| 23.8.1981 | DRM Zolder Westfalen | 58 | #81.M1R.01 | Walter Nussbaumer | Sauber Racing Switzerland | DNF |
| 23.8.1981 | 500 mile Road America | 67 | #WBS59910004301195 | Unser, Jr. / Crevier | Joe Crevier | 40th |
| 23.8.1981 | DRM Zolder Westfalen | 72 | #WBS59910004301023 | Peter Pospieszczyk | Stadt Bielefeld | 11th |
| 23.8.1981 | DRM Zolder Westfalen | 75 | | Hans Christian Jürgensen | Racingteam Jürgensen GmbH & Co. KG | DNF |
| 23.8.1981 | DRM Zolder Westfalen | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | 9th |
| 30.8.1981 | 500 km Mid-Ohio | 41 | #WBS59910004301225 | Deacon / Bartling | Deacon Racing | DNA |
| 30.8.1981 | 500 km Mid-Ohio | 67 | #WBS59910004301195 | Crevier / Koll | Crevier Racing | 21st |
| 30.8.1981 | 500 km Mid-Ohio | 111 | #WBS59910004301065 | Aase / Cook | Charles Kendall | 4th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 56 | | Laurent Ferrier | | 10th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 71 | #WBS59910004301062 | Kurt König | Kurt König | 6th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 73 | #81.M1R.01 | Walter Nussbaumer | Sauber Racing Switzerland | 3rd |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 74 | | Marco Vanoli | Eggenberger Motorsport | 13th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 75 | | Hans Christian Jürgensen | Racing Team Jürgensen | DNF |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 76 | #WBS59910004301076 | Helmut Henzler | BASF Cassetten/Team GS-Sport | 7th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 77 | | Leopold von Bayern | Team Schnitzer | DNF |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 79 | #WBS59910004301042 | Jürgen Lässig | Obermaier | DNF |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 81 | #WBS59910004301061 | Walter Maurer | Walter Maurer | 16th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 82 | #WBS59910004301022 | Walter Brun | | 5th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 84 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | 18th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 85 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | 11th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 87 | | Erich Schreiber | | 12th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 88 | #WBS59910004301100 | François Servanin | BMW Zol Auto | 14th |
| 13.9.1981 | 150 mile Road Atlanta II | 5 | #WBS59910004301018 | Dennis Wilson | Denny Wilson | 7th |
| 13.9.1981 | 150 mile Road Atlanta II | 11 | #WBS59910004301065 | Dennis Aase | Kendall Racing | 5th |
| 13.9.1981 | 150 mile Road Atlanta II | 25 | #WBS59910004301040 | Kenper Miller | Red Lobster Racing | 4th |
| 13.9.1981 | 150 mile Road Atlanta II | 54 | #WBS59910004301027 | Tony Garcia | Montura Racing | 8th |
| 13.9.1981 | 150 mile Road Atlanta II | 67 | #WBS59910004301195 | Joe Crevier | Joe Crevier | 10th |
| 20.9.1981 | DRM Nürburgring Supersprint | 51 | | Hans-Joachim Stuck | Team Schnitzer | DNF |
| 20.9.1981 | DRM Nürburgring Supersprint | 58 | #81.M1R.01 | Walter Nussbaumer | Sauber Racing Switzerland | DNF |
| 20.9.1981 | DRM Nürburgring Supersprint | 71 | #WBS59910004301062 | Kurt König | Kurt König | 5th |
| 20.9.1981 | DRM Nürburgring Supersprint | 72 | | Helmut Kelleners | | DNF |
| 20.9.1981 | DRM Nürburgring Supersprint | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | 9th |
| 20.9.1981 | DRM Nürburgring Supersprint | 75 | | Hans Christian Jürgensen | Racing Team Jürgensen | 8th |
| 20.9.1981 | DRM Nürburgring Supersprint | 76 | #WBS59910004301076 | Helmut Henzler | BASF Cassetten/Team GS-Sport | 6th |
| 20.9.1981 | DRM Nürburgring Supersprint | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | 10th |
| 20.9.1981 | DRM Nürburgring Supersprint | 78 | #WBS59910004301033 | Erich Schiebler | Erich Schiebler | 11th |
| 20.9.1981 | DRM Nürburgring Supersprint | 81 | #WBS59910004301042 | Jürgen Lässig | Obermaier | 7th |
| 20.9.1981 | DRM Nürburgring Supersprint | 82 | | Leopold von Bayern | Team Schnitzer | 12th |
| 27.9.1981 | 500 mile Pocono | 5 | #WBS59910004301018 | Dennis Wilson | Denny Wilson | DNA |
| 27.9.1981 | 1000 km Brands Hatch | 20 | | | BMW Italia | DNA |
| 27.9.1981 | 1000 km Brands Hatch | 22 | #WBS59910004301028 | Bell / Craft | Emka Productions Limited | 3rd |
| 27.9.1981 | 1000 km Brands Hatch | 24 | #81.M1R.02 | Stuck / Heyer | BASF Cassetten Team GS Sport | DNF |
| 27.9.1981 | 500 mile Pocono | 25 | #WBS59910004301040 | Cowart / Miller | Red Lobster Racing | 5th |
| 27.9.1981 | 1000 km Brands Hatch | 40 | #WBS59910004301100 | Servanin / Ferrier | BMW Zol Auto | DNA |
| 27.9.1981 | 500 mile Pocono | 54 | #WBS59910004301027 | Garcia / Naon | Montura Racing | 7th |
| 27.9.1981 | 500 mile Pocono | 67 | #WBS59910004301195 | Crevier / Winters | Joe Crevier | 11th |
| 11.10.1981 | Interserie Zolder | 55 | #WBS59910004301023 | Peter Pospieszczyk | Stadt Bielefeld | DNE |
| 11.10.1981 | Interserie Zolder | 56 | | Hans Christian Jürgensen | Racing Team Juergensen | DNA |
| 6.11.1981 | 9 h Kyalami | 7 | #81.M1R.02 | Heyer / Stuck / Brun | BASF | 8th |
| 6.11.1981 | 9 h Kyalami | 9 | | Surer / Moss | Wurth | DNA |
| 6.11.1981 | 9 h Kyalami | 10 | #WBS59910004301059 | Joosen / Vanoli / Grano | B.M.W. Italia | raced |
| 29.11.1981 | 250 mile Daytona Finale | 25 | #WBS59910004301040 | Cowart / Miller | Red Lobster Racing | 7th |
| 29.11.1981 | 250 mile Daytona Finale | 54 | #WBS59910004301027 | Tony Garcia | Montura Racing | 9th |
| 29.11.1981 | 250 mile Daytona Finale | 67 | #WBS59910004301195 | Crevier / Scott | Joe Crevier | 46th |
| 29.11.1981 | 250 mile Daytona Finale | 73 | #WBS59910004301018 | Dennis Wilson | | 10th |