| 24.5.1981 | 200 mile Lime Rock | 25 | #WBS59910004301040 | Cowart / Miller | Red Lobster Racing | 5th |
| 31.5.1981 | 200 mile Mid-Ohio | 25 | #WBS59910004301040 | Cowart / Miller | Red Lobster Racing | 7th |
| 31.5.1981 | 200 mile Mid-Ohio | 67 | #WBS59910004301195 | Crevier / Unser, Jr. | Joe Crevier | 8th |
| 7.6.1981 | 500 km Fuji | | #WBS59910004301077 | | Auto Beaurex Motor Sports | raced |
| 7.6.1981 | SM Misano | | #WBS59910004301063 | Edy Brandenberger | | ?th |
| 14.6.1981 | 200 km Brainerd | 25 | #WBS59910004301040 | Dave Cowart | Red Lobster Racing | 5th |
| 14.6.1981 | 24 h Le Mans | 50 | #81.M1R.02 | Jarier / Stuck / Henzler | BASF Cassetten Team GS Sport | DNF |
| 14.6.1981 | 24 h Le Mans | 51 | | Darniche / Cecotto / Alliot | B.M.W. Italie-France | 16th |
| 14.6.1981 | 24 h Le Mans | 52 | #81.M1R.01 | Surer / Deacon / Quester | Wuerth-Lubrifilm Team Sauber | DNF |
| 14.6.1981 | 24 h Le Mans | 53 | #WBS59910004301028 | Hobbs / Jordan / O'Rourke | Emka Productions Ltd. | DNF |
| 14.6.1981 | 200 km Brainerd | 67 | | Jeff Scott | Joe Crevier | 15th |
| 14.6.1981 | 24 h Le Mans | 71 | #WBS59910004301036 | Danner / von Bayern / Oberndorfer | Helmut Marko | DNF |
| 14.6.1981 | 24 h Le Mans | 72 | #WBS59910004301100 | Rousselot / Servanin / Ferrier | B.M.W. ZOL' Auto | DNF |
| 21.6.1981 | DRM Wunstorf | 51 | | Hans-Joachim Stuck | Team Schnitzer | DNA |
| 21.6.1981 | DRM Wunstorf | 71 | #WBS59910004301062 | Kurt König | Kurt König | 2nd |
| 21.6.1981 | DRM Wunstorf | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | DNF |
| 21.6.1981 | DRM Wunstorf | 75 | | Hans Christian Jürgensen | Racing Team Jürgensen | 3rd |
| 21.6.1981 | DRM Wunstorf | 76 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten/Team GS-Sport | 1st |
| 21.6.1981 | DRM Wunstorf | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | 6th |
| 21.6.1981 | DRM Wunstorf | 78 | #WBS59910004301023 | Peter Pospieszczyk | | 8th |
| 28.6.1981 | DRM Norisring | 51 | | Hans-Joachim Stuck | Team Schnitzer | 1st |
| 28.6.1981 | Norisring Trophäe | 51 | | Hans-Joachim Stuck | Team Schnitzer | DNF |
| 28.6.1981 | Norisring Trophäe | 57 | | Nelson Piquet | BASF Cassetten/Team GS-Sport | 7th |
| 28.6.1981 | DRM Norisring | 57 | | Nelson Piquet | BASF Cassetten/Team GS-Sport | DNS |
| 28.6.1981 | Norisring Trophäe | 58 | #81.M1R.01 | Dieter Quester | Sauber Racing Switzerland | 8th |
| 28.6.1981 | DRM Norisring | 58 | #81.M1R.01 | Dieter Quester | Sauber Racing Switzerland | DNS |
| 28.6.1981 | Norisring Trophäe | 71 | #WBS59910004301062 | Kurt König | Kurt König | 9th |
| 28.6.1981 | DRM Norisring | 71 | #WBS59910004301062 | Kurt König | Kurt König | 13th |
| 28.6.1981 | DRM Norisring | 73 | #WBS59910004301076 | Walter Nussbaumer | Sauber Racing Switzerland | 8th |
| 28.6.1981 | Norisring Trophäe | 73 | #WBS59910004301076 | Walter Nussbaumer | Sauber Racing Switzerland | raced |
| 28.6.1981 | DRM Norisring | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | 14th |
| 28.6.1981 | DRM Norisring | 75 | | Hans Christian Jürgensen | Racing Team Jürgensen | 10th |
| 28.6.1981 | Norisring Trophäe | 75 | | Hans Christian Jürgensen | Racing Team Jürgensen | DNA |
| 28.6.1981 | Norisring Trophäe | 76 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten/Team GS-Sport | DNA |
| 28.6.1981 | DRM Norisring | 76 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten/Team GS-Sport | 4th |
| 28.6.1981 | DRM Norisring | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | DNS |
| 28.6.1981 | Norisring Trophäe | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | DNA |
| 28.6.1981 | Norisring Trophäe | 82 | #WBS59910004301042 | Mario Ketterer | Hans Obermaier | raced |
| 28.6.1981 | DRM Norisring | 82 | #WBS59910004301042 | Mario Ketterer | Hans Obermaier | 9th |
| 28.6.1981 | DRM Norisring | 84 | #WBS59910004301061 | Walter Maurer | Walter Maurer | 11th |
| 28.6.1981 | Norisring Trophäe | 86 | #WBS59910004301033 | Erich Schiebler | Erich Schiebler | raced |
| 28.6.1981 | DRM Norisring | 86 | #WBS59910004301033 | Erich Schiebler | Erich Schiebler | DNF |
| 28.6.1981 | DRM Norisring | 87 | #WBS59910004301072 | Leopold von Bayern | Team Schnitzer | 7th |
| 28.6.1981 | 6 h Pergusa | | #WBS59910004301026 | Danner / Vanoli / Grano | BMW Italia | DNF |
| 4.7.1981 | 250 mile Daytona Paul Revere | 25 | #WBS59910004301040 | Cowart / Miller | Red Lobster Racing | 2nd |
| 5.7.1981 | DRM Nürburgring GP Tourenwagen | 60 | #WBS59910004301062 | Kurt König | Kurt König | 6th |
| 5.7.1981 | DRM Nürburgring GP Tourenwagen | 61 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | 7th |
| 5.7.1981 | DRM Nürburgring GP Tourenwagen | 62 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | 8th |
| 5.7.1981 | DRM Nürburgring GP Tourenwagen | 63 | | Hans Christian Jürgensen | Racing Team Jürgensen | 9th |
| 5.7.1981 | DRM Nürburgring GP Tourenwagen | 65 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten/Team GS-Sport | 5th |
| 12.7.1981 | 6 h Watkins Glen | 2 | #WBS59910004301269 | Hobbs / Surer | BMW Motorsports GmbH/BMW North America | 14th |
| 12.7.1981 | DRM Salzburgring | 51 | | Hans-Joachim Stuck | Team Schnitzer | 1st |
| 12.7.1981 | DRM Salzburgring | 58 | #81.M1R.01 | Dieter Quester | Sauber-Racing-Switzerland | DNF |
| 12.7.1981 | DRM Salzburgring | 71 | #WBS59910004301062 | Kurt König | Kurt König | 7th |
| 12.7.1981 | DRM Salzburgring | 73 | #WBS59910004301076 | Walter Nussbaumer | Sauber-Racing-Switzerland | 6th |
| 12.7.1981 | DRM Salzburgring | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | raced |
| 12.7.1981 | DRM Salzburgring | 75 | | Hans Christian Jürgensen | Racing-Team Jürgensen GmbH & Co KG | raced |
| 12.7.1981 | DRM Salzburgring | 76 | #WBS59910004301098 | Helmut Henzler | BASF-Cassetten-Team/GS-Sport | DNF |
| 12.7.1981 | DRM Salzburgring | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher-GT-Racing | 8th |
| 12.7.1981 | DRM Salzburgring | 82 | #WBS59910004301042 | Jürgen Lässig | Hans Obermaier | 3rd |
| 12.7.1981 | DRM Salzburgring | 84 | #WBS59910004301061 | Walter Maurer | Walter Maurer | 10th |
| 12.7.1981 | DRM Salzburgring | 86 | #WBS59910004301033 | Erich Schiebler | VSA München | 9th |
| 12.7.1981 | DRM Salzburgring | 87 | #WBS59910004301072 | Rudi Walch | Team Schnitzer | DNF |
| 12.7.1981 | DRM Salzburgring | 90 | #WBS59910004301017 | Sepp Manhalter | Sepp Manhalter | 4th |
| 12.7.1981 | 6 h Watkins Glen | 95 | #WBS59910004301028 | Bell / O'Rourke | EMKA Productions | DNF |
| 12.7.1981 | SM Hockenheim | | #WBS59910004301063 | Edy Brandenberger | | ?th |
| 26.7.1981 | 100 mile Sears Point | 11 | #WBS59910004301065 | Dennis Aase | Kendall Racing | 6th |
| 26.7.1981 | 100 mile Sears Point | 25 | #WBS59910004301040 | Dave Cowart | Red Lobster Racing | 7th |
| 26.7.1981 | 100 mile Sears Point | 67 | #WBS59910004301195 | Joe Crevier | Joe Crevier | 17th |
| 26.7.1981 | 1000 km Fuji | 82 | #WBS59910004301077 | Uchida / Nagasaka | Auto Beaurex Motor Sports | 4th |
| 1.8.1981 | DRM Hockenheim GP | 51 | | Hans-Joachim Stuck | Team Schnitzer | 2nd |
| 1.8.1981 | DRM Hockenheim GP | 62 | #WBS59910004301033 | Erich Schiebler | Erich Schiebler | 16th |
| 1.8.1981 | DRM Hockenheim GP | 64 | #81.M1R.01 | Nussbaumer | Sauber Racing Switzerland | DNF |
| 1.8.1981 | DRM Hockenheim GP | 70 | | Christian Danner | BASF Cassetten Team GS-Sport | 6th |
| 1.8.1981 | DRM Hockenheim GP | 71 | #WBS59910004301062 | Kurt König | Kurt König | 9th |
| 1.8.1981 | DRM Hockenheim GP | 73 | #WBS59910004301076 | Walter Nussbaumer | Sauber Racing Switzerland | DNA |
| 1.8.1981 | DRM Hockenheim GP | 74 | | Marco Vanoli | Eggenberger Motorsport | 15th |
| 1.8.1981 | DRM Hockenheim GP | 75 | | Hans Christian Jürgensen | Racing Team Jürgensen | DNF |
| 1.8.1981 | DRM Hockenheim GP | 76 | #WBS59910004301076 | Helmut Henzler | BASF Cassetten Team GS-Sport | 8th |
| 1.8.1981 | DRM Hockenheim GP | 77 | | Leopold von Bayern | Team Schnitzer | 11th |
| 1.8.1981 | DRM Hockenheim GP | 80 | #WBS59910004301041 | Rolf Göring | Rolf Göring | 14th |
| 1.8.1981 | DRM Hockenheim GP | 81 | #WBS59910004301042 | Mario Ketterer | Jägermeister Racing | 10th |
| 1.8.1981 | DRM Hockenheim GP | 83 | #WBS59910004301063 | Edy Brandenberger | Team Lepitre | DNA |
| 1.8.1981 | DRM Hockenheim GP | 84 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | 13th |
| 1.8.1981 | DRM Hockenheim GP | 85 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | 12th |
| 1.8.1981 | DRM Hockenheim GP | 86 | #WBS59910004301017 | Sepp Manhalter | Sepp Manhalter | DNA |
| 1.8.1981 | DRM Hockenheim GP | 88 | #WBS59910004301061 | Walter Maurer | Walter Maurer | DNA |
| 2.8.1981 | 1 h Portland | 11 | #WBS59910004301065 | Dennis Aase | Dennis Aase | 22nd |
| 2.8.1981 | 1 h Portland | 25 | #WBS59910004301040 | Dave Cowart | Red Lobster Racing | 8th |
| 2.8.1981 | 1 h Portland | 67 | #WBS59910004301195 | Joe Crevier | Joe Crevier | 11th |
| 16.8.1981 | 6 h Mosport | 2 | #WBS59910004301269 | Hobbs / Stuck | BMW Motorsport | 14th |
| 16.8.1981 | 6 h Mosport | 25 | #WBS59910004301040 | Miller / Cowart | Red Lobster Racing | 5th |
| 16.8.1981 | 6 h Mosport | 40 | #WBS59910004301225 | Deacon / Freberg | David Deacon Racing | 20th |
| 16.8.1981 | 6 h Mosport | 54 | #WBS59910004301027 | Garcia / Naon / Cruz | Montura Racing | 8th |
| 23.8.1981 | 500 mile Road America | 11 | #WBS59910004301065 | Aase / Kendall / Smith | Kendall Racing Enterprises | 9th |
| 23.8.1981 | DRM Zolder Westfalen | 51 | | Hans-Joachim Stuck | Team Schnitzer | 4th |
| 23.8.1981 | DRM Zolder Westfalen | 56 | #81.M1R.02 | Christian Danner | BASF Cassetten Team GS-Sport | 3rd |
| 23.8.1981 | DRM Zolder Westfalen | 71 | #WBS59910004301062 | Kurt König | Kurt König | 7th |
| 23.8.1981 | DRM Zolder Westfalen | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | 8th |
| 23.8.1981 | DRM Zolder Westfalen | 76 | #WBS59910004301076 | Helmut Henzler | BASF Cassetten Team GS-Sport | 6th |