Race No. 15
Target Grand Prix
Chicago Motor Speedway — Cicero, Illinois
August 20-22, 1999
Thursday Practice Combined
| pos | car | driver | chassis engine tire | laptime | gap to leader | gap to next | mph | km/h | 110% rule |
| 1 | 33 | Patrick Carpentier | Mercedes/RI/F | 23.635 | 0.000 | 0.000 | 156.734 | 252.184 | n/a |
| 2 | 99 | Greg Moore | Mercedes/RI/F | 23.738 | -0.103 | -0.103 | 156.054 | 251.090 | n/a |
| 3 | 11 | Roberto Moreno | Ford Cos/SW/F | 23.781 | -0.146 | -0.043 | 155.771 | 250.636 | 100.40% |
| 4 | 17 | Mauricio Gugelmin | Mercedes/RI/F | 23.823 | -0.188 | -0.042 | 155.497 | 250.194 | 100.58% |
| 5 | 9X | Helio Castro-Neves | Mercedes/LT/F | 23.824 | -0.189 | -0.001 | 155.490 | 250.184 | 100.58% |
| 6 | 8 | Bryan Herta | Ford Cos/RI/F | 23.834 | -0.199 | -0.010 | 155.425 | 250.079 | 100.62% |
| 7 | 40 | PJ Jones | Ford Cos/RI/F | 23.871 | -0.236 | -0.037 | 155.184 | 249.691 | 100.78% |
| 8 | 22 | Robby Gordon | Toyota/EA/F | 23.902 | -0.267 | -0.031 | 154.983 | 249.367 | 100.91% |
| 9 | 6 | Michael Andretti | Ford Cos/SW/F | 23.919 | -0.284 | -0.017 | 154.873 | 249.190 | 100.98% |
| 10 | 18X | Mark Blundell | Mercedes/RI/F | 23.956 | -0.321 | -0.037 | 154.633 | 248.805 | 101.14% |
| 11 | 25X | Cristiano da Matta | Toyota/RI/F | 23.957 | -0.322 | -0.001 | 154.627 | 248.795 | 101.14% |
| 12 | 26 | Paul Tracy | Honda/RI/F | 23.964 | -0.329 | -0.007 | 154.582 | 248.722 | 101.17% |
| 13 | 7 | Max Papis | Ford Cos/RI/F | 23.964 | -0.329 | 0.000 | 154.582 | 248.722 | 101.17% |
| 14 | 20 | Jan Magnussen | Ford Cos/SW/F | 24.023 | -0.388 | -0.059 | 154.202 | 248.111 | 101.42% |
| 15 | 18 | Mark Blundell | Mercedes/RI/F | 24.121 | -0.486 | -0.098 | 153.576 | 247.103 | 101.83% |
| 16 | 10 | Richie Hearn | Toyota/RI/F | 24.127 | -0.492 | -0.006 | 153.538 | 247.042 | 101.86% |
| 17 | 4X | Juan Montoya | Honda/RI/F | 24.139 | -0.504 | -0.012 | 153.461 | 246.919 | 101.91% |
| 18 | 5 | Gil de Ferran | Honda/RI/G | 24.148 | -0.513 | -0.009 | 153.404 | 246.827 | 101.95% |
| 19 | 24 | Scott Pruett | Toyota/RI/F | 24.160 | -0.525 | -0.012 | 153.328 | 246.704 | 102.00% |
| 20 | 17X | Mauricio Gugelmin | Mercedes/RI/F | 24.306 | -0.671 | -0.146 | 152.407 | 245.223 | 102.62% |
| 21 | 8X | Bryan Herta | Ford Cos/RI/F | 24.344 | -0.709 | -0.038 | 152.169 | 244.840 | 102.78% |
| 22 | 21 | Luiz Garcia Jr. | Mercedes/LT/F | 24.394 | -0.759 | -0.050 | 151.857 | 244.338 | 102.99% |
| 23 | 36 | Raul Boesel | Toyota/EA/G | 24.401 | -0.766 | -0.007 | 151.813 | 244.268 | 103.02% |
| 24 | 44 | Tony Kanaan | Honda/RI/F | 24.405 | -0.770 | -0.004 | 151.789 | 244.228 | 103.03% |
| 25 | 27 | Dario Franchitti | Honda/RI/F | 24.461 | -0.826 | -0.056 | 151.441 | 243.669 | 103.27% |
| 26 | 12 | Jimmy Vasser | Honda/RI/F | 24.615 | -0.980 | -0.154 | 150.494 | 242.144 | 103.92% |
| 27 | 2 | Al Unser Jr. | Mercedes/LT/G | 24.648 | -1.013 | -0.033 | 150.292 | 241.820 | 104.06% |
| 28 | 19 | Michel Jourdain Jr. | Ford Cos/LT/F | 25.331 | -1.696 | -0.683 | 146.240 | 235.300 | 106.94% |
| 29 | 25 | Cristiano da Matta | Toyota/RI/F | 25.461 | -1.826 | -0.130 | 145.493 | 234.098 | 107.49% |
| 30 | 24X | Scott Pruett | Toyota/RI/F | 25.812 | -2.177 | -0.351 | 143.515 | 230.915 | 108.97% |
| 31 | 2X | Al Unser Jr. | Mercedes/LT/G | 26.167 | -2.532 | -0.355 | 141.568 | 227.782 | 110.47% |
| 32 | 34 | Dennis Vitolo | Ford Cos/RI/F | 26.186 | -2.551 | -0.019 | 141.465 | 227.617 | 110.55% |
| 33 | 9 | Helio Castro-Neves | Mercedes/LT/F | 26.335 | -2.700 | -0.149 | 140.665 | 226.329 | 111.18% |
| 34 | 16 | Shigeaki Hattori | Mercedes/RI/G | 26.844 | -3.209 | -0.509 | 137.997 | 222.038 | 113.33% |
| 35 | 5X | Gil de Ferran | Honda/RI/G | 27.212 | -3.577 | -0.368 | 136.131 | 219.035 | 114.88% |
| 36 | 12X | Jimmy Vasser | Honda/RI/F | 28.502 | -4.867 | -1.290 | 129.970 | 209.121 | 120.33% |