PORSCHE RACING HISTORYCharles Mendez (USA)
1979 : Sebring 12 Hours - 2nd overall : Lime Rock 100 Miles - 3rd overall : Daytona Paul Revere 250 Miles - 1st overall : Road America 500 Miles - 2nd overall : Daytona Finale 250 Miles - 3rd overall
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA)/Johnny Rutherford (USA)/Paul Miller (USA) | Budweiser Racing (USA) | 15th | 4th | 12th | 529 laps - Rear Suspension |
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA)/Brian Redman (GB)/Paul Miller (USA) | Busch Beer Racing (USA) | 2nd | 2nd | 4th | 238 laps |
8 April 1979 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA) | Busch Racing (USA) | 8th | 7th | 13th | 38 laps |
22 April 1979 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA)/Paul Miller (USA) | Busch Beer Racing (USA) | 37th | 13th | 10th | 88 laps - DNF |
13 May 1979 - Hallett 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA) | Busch Beer Racing (USA) | 6th | 6th | 8th | 54 laps |
28 May 1979 - Lime Rock 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA) | Busch Beer Racing (USA) | 3rd | 3rd | 7th | 64 laps |
17 June 1979 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA) | Busch Beer Racing (USA) | 4th | 4th | 8th | 33 laps |
4 July 1979 - Daytona Paul Revere 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA)/Hurley Haywood (USA) | Busch Beer Racing (USA) | 1st | 1st | 4th | 65 laps |
7 July 1979 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 | 930 770 0957 | Gr.5 | Charles Mendez (USA)/Paul Miller (USA) | CMR Inc. (USA) | 5th | 4th | 10th | 167 laps |
15 July 1979 - Mid-Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0911 | GTX | Charles Mendez (USA)/Hurley Haywood (USA) | Busch Beer Racing (USA) | 5th | 5th | 6th | 98 laps |
29 July 1979 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0911 | GTX | Charles Mendez (USA) | 7th | 6th | 11th | 38 laps - Accident |
5 August 1979 - Portland 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA) | 5th | 5th | 8th | 50 laps |
2 September 1979 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA)/Paul Miller (USA) | CMR, Inc. (USA) | 2nd | 2nd | 6th | 125 laps |
23 September 1979 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA) | Busch Beer (USA) | 6th | 6th | 5th | 39 laps |
25 November 1979 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 | 930 770 0911 | GTX | Charles Mendez (USA)/Brian Redman (GB) | 3rd | 3rd | 5th | 47 laps |