Oak Tree Grand Prix at VIR 2015
IMSA WeatherTech SportsCar Championship round 10, United States, 21 - 23 August 2015
Oak Tree Grand Prix at VIR 2015
Friday 21 - Sunday 23 August 2015
IMSA WeatherTech SportsCar Championship

Entries
| No. | Class | Car | Entrants |
|---|---|---|---|
| 3 | GTLM | Chevrolet Corvette C7.R Chevrolet 5.5L V8 | Chevrolet Corvette C7.R |
| 4 | GTLM | Chevrolet Corvette C7.R Chevrolet 5.5L V8 | Chevrolet Corvette C7.R |
| 007 | GTD | Aston Martin V12 Vantage Aston Martin 6.0L V12 | Aston Martin V12 Vantage |
| 17 | GTLM | Porsche 911 RSR Porsche 4.0L Flat-6 | Porsche 911 RSR |
| 22 | GTD | Porsche 911 GT America Porsche 4.0L Flat-6 | Porsche 911 GT America |
| 23 | GTD | Porsche 911 GT America Porsche 4.0L Flat-6 | Porsche 911 GT America |
| 24 | GTLM | BMW Z4 GTE BMW 4.4L V8 | BMW Z4 GTE |
| 25 | GTLM | BMW Z4 GTE BMW 4.4L V8 | BMW Z4 GTE |
| 33 | GTD | Dodge Viper SRT Dodge 8.3L V10 | Dodge Viper SRT |
| 44 | GTD | Porsche 911 GT America Porsche 4.0L Flat-6 | Porsche 911 GT America |
| 48 | GTD | Audi R8 LMS Audi 5.2L V10 | Audi R8 LMS |
| 62 | GTLM | Ferrari 458 Italia GT2 chassis F142 GT*2866* • Ferrari F142 4.5L V8 | Ferrari 458 Italia GT2 |
| 63 | GTD | 2011 Ferrari 458 Italia GT3-AM chassis 3270 • Ferrari 4.5L V8 | 2011 Ferrari 458 Italia GT3-AM |
| 73 | GTD | Porsche 911 GT America Porsche 4.0L Flat-6 | Porsche 911 GT America |
| 76 | GTD | Audi R8 LMS Audi 5.2L V10 | Audi R8 LMS |
| 97 | GTD | BMW Z4 GT3 BMW 4.4L V8 | BMW Z4 GT3 |
| 911 | GTLM | Porsche 911 RSR Porsche 4.0L Flat-6 | Porsche 911 RSR |
| 912 | GTLM | Porsche 911 RSR Porsche 4.0L Flat-6 | Porsche 911 RSR |