Standings
GT Prototype Manufacturers Championship
| Pos | Teams | Points |
 US
|
US
|
US
|
US
|
US
|
 CA
|
US
|
US
|
US
|
US
|
US
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Porsche | 2752 | 312 | 330 | 378 | 355 | 280 | 330 | - | 382 | - | 385 | - |
| 2 | Cadillac | 2744 | 350 | 385 | 332 | 380 | 320 | 312 | - | 335 | - | 330 | - |
| 3 | Honda | 2691 | 385 | 312 | 315 | 332 | 300 | 385 | - | 350 | - | 312 | - |
| 4 | BMW | 2688 | 328 | 348 | 350 | 308 | 350 | 348 | - | 308 | - | 348 | - |
