| Friday – May 25, 2018 | |||||
| Buttonwillow Raceway (13CW) | |||||
| Ranking | Lap Time | Name | Laps | Vehicle | Fast Lap |
| 1 | 01:48.505 | Gabriel Shadid | 29 | E90 M3 | 9 |
| 2 | 01:49.038 | Bassam Michiel | 17 | E36 | 6 |
| 3 | 01:49.676 | Peter Mow | 24 | Cayman | 6 |
| 4 | 01:51.358 | Drew Brown | 8 | Corvette Z06 | 8 |
| 5 | 01:55.962 | Josh Shokri | 12 | GT3 | 12 |
| 6 | 01:56.843 | Steven Kronemberger | 21 | Civic Type R | 16 |
| 7 | 01:58.296 | seth snyder | 25 | corvette z06 | 13 |
| 8 | 01:58.686 | Adam H | 21 | GT3RS | 21 |
| 9 | 01:59.716 | Mingcong Ding | 27 | E92 M3 | 16 |
| 10 | 02:00.093 | Sean McWherter | 29 | Corvette | 18 |
| 11 | 02:00.750 | Bob Day | 23 | R8 | 10 |
| 12 | 02:00.774 | Fei Yu | 7 | Lambo | 3 |
| 13 | 02:00.776 | Daniel Harman | 48 | Gt3 | 40 |
| 14 | 02:01.403 | Bob Kahbob | 36 | 718 Cayman S | 36 |
| 15 | 02:01.734 | Randy Bergman | 30 | GT350 | 5 |
| 16 | 02:01.739 | Thomas Levesque | 12 | Viper Comp Coupe | 5 |
| 17 | 02:01.924 | julian zajfen | 20 | GT3 | 7 |
| 18 | 02:02.397 | CHEN ZHANG | 22 | M3 | 12 |
| 19 | 02:02.653 | Kevin Lu | 32 | GT4 | 32 |
| 20 | 02:03.063 | Mark Still | 34 | Camaro | 18 |
| 21 | 02:03.379 | moto bisi | 7 | porsche | 3 |
| 22 | 02:03.430 | Ricky Bergman | 26 | Mustang GT | 5 |
| 23 | 02:05.090 | tianqing yu | 35 | M3 | 1 |
| 24 | 02:06.029 | Kai Tian | 41 | M3 | 3 |
| 25 | 02:10.247 | Wei Tan | 11 | mazda | 11 |
| 26 | 02:10.415 | Hrayer Dekermenjian | 31 | Caymen S | 30 |
| 27 | 02:10.801 | Junbo Zhao | 22 | s2000 | 22 |
| 28 | 02:11.470 | Holt Walter | 18 | M2 | 9 |
| 29 | 02:11.549 | Yiang Chen | 10 | M6 | 10 |
| 30 | 02:11.832 | Edward Nichols | 29 | Shelby gt350r | 22 |
| 31 | 02:12.428 | Will Garner | 49 | Focus RS | 18 |
| 32 | 02:14.206 | John OConnor | 33 | E91 | 5 |
| 33 | 02:14.538 | Thomas Ying | 19 | M3 | 8 |
| 34 | 02:32.031 | Andrew Stolper | 16 | 991 C4S Cab | 10 |
| Saturday – May 26, 2018 | |||||
| Buttonwillow Raceway (13CW) | |||||
| Ranking | Lap Time | Name | Laps | Vehicle | Fast Lap |
| 1 | 01:52.345 | Viktor Czapla | 30 | R8 | 19 |
| 2 | 01:53.596 | Mike Lewis | 17 | 335 | 4 |
| 3 | 01:54.062 | Chenyu Zhang | 46 | 991.2gt3 | 21 |
| 4 | 01:54.804 | Alan Bidgoli | 35 | GT3 | 22 |
| 5 | 01:55.689 | Josh Shokri | 8 | GT3 | 5 |
| 6 | 01:57.031 | Shake K | 20 | GT3 rs | 7 |
| 7 | 01:57.374 | Eric Poulsen | 35 | GT3 RS | 22 |
| 8 | 01:57.716 | CHAD CARNEVALE | 47 | GT3 | 35 |
| 9 | 01:57.800 | Ming Ho Tsui | 30 | M3 | 16 |
| 10 | 01:59.289 | Mingcong Ding | 22 | E92 M3 | 14 |
| 11 | 01:59.579 | Hancheng Pan | 6 | m3 | 2 |
| 12 | 02:00.285 | Joey Seely | 38 | 911 | 26 |
| 13 | 02:00.567 | Zhenyu Li | 19 | wrx sti | 4 |
| 14 | 02:01.043 | Rob Walker | 48 | M2 | 47 |
| 15 | 02:01.055 | Guodong Yu | 36 | gt3 | 20 |
| 16 | 02:01.615 | tian zhou | 22 | M4 | 22 |
| 17 | 02:02.010 | Muqian Du | 6 | GTR | 2 |
| 18 | 02:02.668 | Kevin Lu | 18 | GT4 | 10 |
| 19 | 02:02.950 | chaofan hou | 14 | C63S | 5 |
| 20 | 02:02.977 | John Cox | 45 | M3 | 37 |
| 21 | 02:03.126 | Yinzhuang Guo | 7 | 650 | 2 |
| 22 | 02:03.178 | Emre Ucer | 27 | 996 Cup Car | 27 |
| 23 | 02:03.542 | Satakal Khalsa | 58 | 323i | 5 |
| 24 | 02:04.089 | Zhenyu Huang | 35 | Camaro | 27 |
| 25 | 02:04.278 | jason zhang | 25 | 458 | 16 |
| 26 | 02:04.656 | Zeshi Lyu | 25 | M2 | 11 |
| 27 | 02:04.691 | Zexi Huang | 14 | 911 GTS | 9 |
| 28 | 02:04.788 | Ron Esfandiari | 35 | GT4 | 27 |
| 29 | 02:04.815 | RALPH POPELAR | 32 | VIPER GTS | 11 |
| 30 | 02:05.154 | Yingchen Hong | 8 | Corvette C6 | 6 |
| 31 | 02:05.416 | Liuyi Shi | 14 | C63s | 6 |
| 32 | 02:06.176 | Kato | 20 | Factoy 5 | 10 |
| 33 | 02:06.691 | Sean Kelishadi | 48 | M3 | 47 |
| 34 | 02:07.573 | Otame Khyate | 17 | M3 | 5 |
| 35 | 02:07.801 | artour arakelian | 41 | GT4 | 5 |
| 36 | 02:07.864 | Sean Acosta | 44 | 488 | 37 |
| 37 | 02:08.031 | Jason Gao | 18 | Boxster S | 17 |
| 38 | 02:08.221 | tianqing yu | 13 | M3 | 6 |
| 39 | 02:08.330 | Will Garner | 38 | Focus RS | 6 |
| 40 | 02:08.367 | Marc Struhl | 42 | M3 | 12 |
| 41 | 02:08.988 | Kevin McDonald | 37 | S2000 | 28 |
| 42 | 02:09.027 | Leon Zhang | 21 | AMGGTS | 20 |
| 43 | 02:09.176 | Adalberto Rosario | 34 | RSX-s | 14 |
| 44 | 02:09.505 | Daniel Lee | 33 | e30 M3 | 28 |
| 45 | 02:09.548 | Weichen Tai | 42 | S3 | 27 |
| 46 | 02:09.578 | SAU TAN | 27 | GLA45 | 27 |
| 47 | 02:10.927 | Johnny Lam | 30 | M3 | 23 |
| 48 | 02:11.031 | Tom Wallerstein | 39 | 4C | 39 |
| 49 | 02:12.149 | John Feng | 38 | S2k | 7 |
| 50 | 02:12.866 | Hang Cheung | 27 | M4 | 20 |
| 51 | 02:13.185 | Noah Holmes | 9 | E36 M3 | 6 |
| 52 | 02:13.432 | Xiao Lei | 20 | Challenger | 8 |
| 53 | 02:14.520 | Stepan Kasimian | 33 | Challenger hellcat | 31 |
| 54 | 02:15.230 | Alexander Polonsky | 13 | — | 13 |
| 55 | 02:16.288 | Mike Magaw | 22 | 981CS | 9 |
| 56 | 02:17.281 | Jixiang Zhou | 15 | C63s | 11 |
| 57 | 02:17.952 | Yu Ng | 19 | miata | 18 |
| 58 | 02:17.969 | Zek Song | 11 | Rx-7 | 7 |
| 59 | 02:18.406 | Ting B. Wu | 19 | G37s | 7 |
| 60 | 02:19.881 | Aaron McCauley | 24 | RCF | 22 |
| 61 | 02:23.333 | Haing LAING | 6 | C63 | 3 |