PORSCHE RACING HISTORYRen Tilton (USA)
1978 : Daytona 250 Miles Paul Revere - 3rd in class : Portland 100 Miles - 3rd in class
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 S | GTU | John Thomas (USA)/Ren Tilton (USA)/Rusty Bond (USA) | R & R Racing | 17th | 5th | 34th | 551 laps |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 89 | Porsche 911 | GTU | Rusty Bond (USA)/Ren Tilton (USA) | Barrick Motor Racing | 21st | 8th | 39th | 181 laps |
2 April 1978 - Talladega 6 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 S | GTU | Rusty Bond (USA)/Ren Tilton (USA) | R & R Racing | 29th | 9th | 22nd | 88 laps - Overheating |
29 May 1978 - Lime Rock 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 | GTO | Ren Tilton (USA) | 16th | 6th | 20th | 57 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 S | GTU | Rusty Bond (USA)/Ren Tilton (USA) | 17th | 3rd | 40th | 58 laps - DNF |
30 July 1978 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 | GTO | Ren Tilton (USA) | 12th | 4th | 23rd | 36 laps |
6 August 1978 - Portland 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 | GTO | Ren Tilton (USA) | 10th | 3rd | 22nd | 45 laps |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 S | GTU | Rusty Bond (USA)/Ren Tilton (USA) | 29th | 9th | 33rd | 84 laps |
4 September 1978 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 | GTO | Ren Tilton (USA) | R & R Racing | 21st | 11th | 28th | 33 laps |