| 1.2.1981 | 24 h Daytona | 2 | #WBS59910004301269 | Hobbs / Surer / Quester | BMW Motorsport | 16th |
| 1.2.1981 | 24 h Daytona | 14 | #WBS59910004301021 | Stuck / Gebhardt / Brun | Bavarian Motors International | 6th |
| 1.2.1981 | 24 h Daytona | 25 | #WBS59910004301040 | Miller / Cowart / Londono | Red Lobster Racing | 33rd |
| 1.2.1981 | 24 h Daytona | 40 | #WBS59910004301225 | Bartling / Freberg / Deacon | David Deacon Racing | 53rd |
| 21.3.1981 | 12 h Sebring | 14 | #WBS59910004301021 | Gebhardt / Surer | BMW Challenge Team | 49th |
| 21.3.1981 | 12 h Sebring | 25 | #WBS59910004301040 | Cowart / Miller | Red Lobster Racing | 27th |
| 21.3.1981 | 12 h Sebring | 40 | #WBS59910004301225 | Deacon / Freberg / Bartling | David Deacon Racing | 64th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 51 | | Hans-Joachim Stuck | Lubrifilm Schnitzer BMW Team | DNF |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 71 | #WBS59910004301062 | Kurt König | Kurt König | 7th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 73 | #WBS59910004301076 | Walter Nussbaumer | Sauber Racing Switzerland | DNF |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher Racing | 8th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 75 | | Hans Christian Jürgensen | Racingteam Jürgensen | 10th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 76 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten / Team GS Sport | 4th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | 11th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 79 | #WBS59910004301023 | Peter Pospieszczyk | Kannacher GT Racing | DNA |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 81 | #WBS59910004301041 | Rolf Göring | Rolf Göring | 9th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 83 | #WBS59910004301061 | Walter Maurer | Walter Maurer | 13th |
| 29.3.1981 | DRM Nürburgring 300 | 51 | | Hans-Joachim Stuck | Lubrifilm Schnitzer BMW- Team | 3rd |
| 29.3.1981 | DRM Nürburgring 300 | 71 | #WBS59910004301062 | Kurt König | Kurt König | 6th |
| 29.3.1981 | DRM Nürburgring 300 | 73 | #WBS59910004301076 | Walter Nussbaumer | Sauber Racing Schweiz | DNF |
| 29.3.1981 | DRM Nürburgring 300 | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | 8th |
| 29.3.1981 | DRM Nürburgring 300 | 75 | | Hans Christian Jürgensen | Racing Team Jürgensen GmbH & Co. KG | 9th |
| 29.3.1981 | DRM Nürburgring 300 | 76 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten/Team GS-Sport | 7th |
| 29.3.1981 | DRM Nürburgring 300 | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | 10th |
| 29.3.1981 | DRM Nürburgring 300 | 81 | #WBS59910004301041 | Rolf Göring | Rolf Göring | 11th |
| 29.3.1981 | DRM Nürburgring 300 | 82 | #WBS59910004301042 | Jürgen Lässig | Hans Obermaier | DNA |
| 29.3.1981 | DRM Nürburgring 300 | 84 | #WBS59910004301061 | Walter Maurer | Walter Maurer | DNA |
| 29.3.1981 | DRM Nürburgring 300 | 86 | #WBS59910004301033 | Erich Schiebler | Erich Schiebler | DNF |
| 5.4.1981 | DRM Hockenheim Jim Clark | 51 | | Hans-Joachim Stuck | Lubrifilm Schnitzer BMW Team | DNF |
| 5.4.1981 | DRM Hockenheim Jim Clark | 71 | #WBS59910004301062 | Kurt König | Kurt König | 6th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 73 | #WBS59910004301076 | Walter Nussbaumer | Sauber Racing | 7th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT-Racing | 10th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 75 | | Hans Christian Jürgensen | Racingteam Jürgensen GmbH & Co. KG | 12th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 76 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten-Team - GS-Sport | 5th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT-Racing | 11th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 79 | | Franz Klammer | Marko RSM | DNA |
| 5.4.1981 | DRM Hockenheim Jim Clark | 80 | #WBS59910004301063 | Edy Brandenberger | Team Lepitre | 8th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 81 | | | Team Lepitre | DNA |
| 5.4.1981 | DRM Hockenheim Jim Clark | 82 | #WBS59910004301033 | Erich Schiebler | Erich Schiebler | 13th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 83 | #WBS59910004301061 | Walter Maurer | Walter Maurer | DNA |
| 5.4.1981 | DRM Hockenheim Jim Clark | 85 | #WBS59910004301042 | Jürgen Lässig | Hans Obermaier | 9th |
| 12.4.1981 | 6 h Mugello | 3 | #WBS59910004301059 | Cecotto / Fabi | BMW Italia/ORECA | DNF |
| 12.4.1981 | 100 mile Road Atlanta | 25 | #WBS59910004301040 | Dave Cowart | Red Lobster Racing | 11th |
| 12.4.1981 | 6 h Mugello | 31 | #WBS59910004301100 | Servanin / Ferrier / Rousselot | BMW Italia | 5th |
| 12.4.1981 | 6 h Mugello | 32 | | Fabi / Danner | BMW Italia | 8th |
| 12.4.1981 | 6 h Mugello | 33 | #WBS59910004301036 | Zamagna / Oberndorfer | Helmut Marko | DNA |
| 12.4.1981 | 100 mile Road Atlanta | 40 | #WBS59910004301225 | David Deacon | David Deacon | 16th |
| 19.4.1981 | SM Dijon | | #WBS59910004301063 | Edy Brandenberger | | ?th |
| 26.4.1981 | 6 h Riverside | 11 | #WBS59910004301065 | Aase / Smith | Kendall Racing | 25th |
| 26.4.1981 | 6 h Riverside | 14 | #WBS59910004301021 | Gebhardt / Beilcke / Freberg | Bavarian Motors International | 33rd |
| 26.4.1981 | 1000 km Monza | 16 | #WBS59910004301059 | Fabi / Quester | ORECA | 4th |
| 26.4.1981 | 1000 km Monza | 18 | #WBS59910004301100 | Rousselot / Servanin / Ferrier | BMW Zol Auto | 6th |
| 26.4.1981 | 1000 km Monza | 19 | #WBS59910004301026 | Vanoli / Grano | Umberto Grano | 10th |
| 26.4.1981 | 1000 km Monza | 21 | #WBS59910004301028 | Bell / O'Rourke | EMKA Productions | DNF |
| 26.4.1981 | 6 h Riverside | 25 | #WBS59910004301040 | Miller / Cowart | Red Lobster Racing | 7th |
| 26.4.1981 | 6 h Riverside | 40 | #WBS59910004301225 | Deacon | David Deacon Racing | 53rd |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 51 | | Hans-Joachim Stuck | Lubrifilm Schnitzer BMW Team | 3rd |
| 26.4.1981 | 6 h Riverside | 54 | #WBS59910004301027 | Naon / Garcia / Cruz | Montura Racing | 8th |
| 26.4.1981 | 6 h Riverside | 67 | #WBS59910004301195 | Crevier / Unser, Jr. | Joe Crevier | 11th |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 71 | #WBS59910004301062 | Kurt König | Kurt König | 6th |
| 26.4.1981 | 6 h Riverside | 72 | #WBS59910004301269 | Hobbs / Surer | BMW North America | DNS |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 73 | #WBS59910004301076 | Walter Nussbaumer | Sauber Racing Switzerland | 10th |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | 9th |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 76 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten - Team GS Sport | 8th |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | DNA |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 81 | #WBS59910004301041 | Rolf Göring | Rolf Göring | DNA |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 87 | #WBS59910004301072 | | Lubrifilm Schnitzer BMW Team | DNA |
| 3.5.1981 | 100 mile Laguna Seca | 14 | #WBS59910004301021 | Alf Gebhardt | BMW Challenge Team | 32nd |
| 3.5.1981 | 100 mile Laguna Seca | 25 | #WBS59910004301040 | Dave Cowart | Red Lobster Racing | 13th |
| 3.5.1981 | 100 mile Laguna Seca | 40 | #WBS59910004301225 | David Deacon | David Deacon | 20th |
| 3.5.1981 | 100 mile Laguna Seca | 67 | #WBS59910004301195 | Al Unser, Jr. | Joe Crevier | 14th |
| 3.5.1981 | 100 mile Laguna Seca | 92 | #WBS59910004301269 | David Hobbs | BMW Motorsport | DNA |
| 10.5.1981 | 6 h Silverstone | 19 | #81.M1R.01 | Surer / Quester | Sauber Racing Switzerland | DNA |
| 10.5.1981 | 6 h Silverstone | 20 | | Teo Fabi | BMW Italy | DNA |
| 10.5.1981 | 6 h Silverstone | 34 | #WBS59910004301100 | Servanin / Rousselot / Ferrier | BMW Zol 'Auto | DNA |
| 10.5.1981 | 6 h Silverstone | 35 | #WBS59910004301098 | Stuck / Heyer | BASF Team GS Sport | DNF |
| 10.5.1981 | 6 h Silverstone | 40 | #WBS59910004301028 | Bell / O'Rourke / Hobbs | Emka Productions Ltd. | 2nd |
| 10.5.1981 | SM Dijon | | #WBS59910004301063 | Edy Brandenberger | | ?th |
| 17.5.1981 | MEZ Havířov | 1 | #WBS59910004301036 | Dieter Quester | Marko RSM | DNA |
| 17.5.1981 | MEZ Havířov | 2 | #WBS59910004301017 | Sepp Manhalter | Manhalter | 1st |
| 17.5.1981 | MEZ Havířov | 8 | #WBS59910004301061 | Walter Maurer | Maurer | 3rd |
| 17.5.1981 | DRM Mainz-Finthen | 51 | | Hans-Joachim Stuck | Team Schnitzer | DNF |
| 17.5.1981 | DRM Mainz-Finthen | 71 | #WBS59910004301062 | Kurt König | Kurt König | DNF |
| 17.5.1981 | DRM Mainz-Finthen | 74 | #4301066 or 4301030 | Ralf-Dieter Schreiber | Kannacher GT Racing | raced |
| 17.5.1981 | DRM Mainz-Finthen | 75 | | Hans Christian Jürgensen | Racing Team Jürgensen | 7th |
| 17.5.1981 | DRM Mainz-Finthen | 76 | #WBS59910004301098 | Helmut Henzler | BASF Cassetten/Team GS-Sport | 5th |
| 17.5.1981 | DRM Mainz-Finthen | 77 | #4301030 or 4301066 | Jürgen Kannacher | Kannacher GT Racing | raced |
| 17.5.1981 | DRM Mainz-Finthen | 78 | #WBS59910004301023 | Peter Pospieszczyk | | 8th |
| 17.5.1981 | DRM Mainz-Finthen | 81 | #WBS59910004301041 | Rolf Göring | | raced |
| 17.5.1981 | DRM Mainz-Finthen | 85 | #WBS59910004301042 | Jürgen Lässig | Obermaier | 6th |
| 17.5.1981 | DRM Mainz-Finthen | | | Erich Schreiber | | raced |
| 24.5.1981 | 1000 km Nürburgring | 12 | #81.M1R.02 | Stuck / Piquet | GS Tuning | 1st |
| 24.5.1981 | 1000 km Nürburgring | 14 | #81.M1R.01 | Surer / Quester | Sauber AG | 13th |
| 24.5.1981 | 1000 km Nürburgring | 24 | #WBS59910004301028 | Bell / Henzler | EMKA Productions | 33rd |
| 24.5.1981 | 200 mile Lime Rock | 25 | #WBS59910004301040 | Cowart / Miller | Red Lobster Racing | 5th |
| 24.5.1981 | 1000 km Nürburgring | 37 | | Duge / Lässig | WERA-Meissberg | DNF |
| 24.5.1981 | 1000 km Nürburgring | 38 | #WBS59910004301062 | König / Oberndorfer | Kurt König | 14th |