Race No. 19
Marlboro 500
Presented by Toyota
California Speedway — Fontana, California
October 30 - November 1, 1998
Second Individual Friday Practice Report
| pos | car | driver | chassis engine tire | laptime | gap to leader | gap to next | mph | km/h | 110% rule |
| 1 | 6 | Michael Andretti | 009.c/XD/G | 31.026 | 0.000 | 0.000 | 235.428 | 378.885 | n/a |
| 2 | 17 | Mauricio Gugelmin | 98I/108E/F | 31.105 | -0.079 | -0.079 | 234.830 | 377.923 | n/a |
| 3 | 99 | Greg Moore | 98I/108E/F | 31.152 | -0.126 | -0.047 | 234.476 | 377.353 | 100.28% |
| 4 | 12 | Jimmy Vasser | 98I/HRK/F | 31.179 | -0.153 | -0.027 | 234.273 | 377.026 | 100.37% |
| 5 | 26 | Paul Tracy | 98I/HRK/F | 31.189 | -0.163 | -0.010 | 234.198 | 376.905 | 100.40% |
| 6 | 10 | Richie Hearn | 009.c/XD/F | 31.299 | -0.273 | -0.110 | 233.375 | 375.580 | 100.75% |
| 7 | 9X | JJ Lehto (R) | 98I/108E/F | 31.328 | -0.302 | -0.029 | 233.159 | 375.233 | 100.85% |
| 8 | 3 | Andre Ribeiro | P98/108E/G | 31.363 | -0.337 | -0.035 | 232.899 | 374.814 | 100.96% |
| 9 | 1 | Alex Zanardi | 98I/HRK/F | 31.383 | -0.357 | -0.020 | 232.750 | 374.575 | 101.02% |
| 10 | 27 | Dario Franchitti | 98I/HRK/F | 31.409 | -0.383 | -0.026 | 232.558 | 374.265 | 101.11% |
| 11 | 7 | Bobby Rahal | 98I/XD/F | 31.413 | -0.387 | -0.004 | 232.528 | 374.217 | 101.12% |
| 12 | 7X | Bobby Rahal | 98I/XD/F | 31.415 | -0.389 | -0.002 | 232.513 | 374.194 | 101.13% |
| 13 | 8 | Bryan Herta | 98I/XD/F | 31.435 | -0.409 | -0.020 | 232.365 | 373.956 | 101.19% |
| 14 | 11 | Christian Fittipaldi | 009.c/XD/G | 31.444 | -0.418 | -0.009 | 232.299 | 373.849 | 101.22% |
| 15 | 18 | Mark Blundell | 98I/108E/F | 31.496 | -0.470 | -0.052 | 231.915 | 373.231 | 101.39% |
| 16 | 20 | Scott Pruett | 98I/XD/F | 31.504 | -0.478 | -0.008 | 231.856 | 373.137 | 101.41% |
| 17 | 11X | Christian Fittipaldi | 009.c/XD/G | 31.534 | -0.508 | -0.030 | 231.636 | 372.782 | 101.51% |
| 18 | 5 | Gil de Ferran | 98I/HRK/G | 31.548 | -0.522 | -0.014 | 231.533 | 372.616 | 101.55% |
| 19 | 2X | Al Unser Jr. | P98/108E/G | 31.593 | -0.567 | -0.045 | 231.203 | 372.085 | 101.70% |
| 20 | 24 | Robby Gordon | 98I/RV8C/F | 31.605 | -0.579 | -0.012 | 231.115 | 371.944 | 101.74% |
| 21 | 33 | Patrick Carpentier | 98I/108E/F | 31.639 | -0.613 | -0.034 | 230.867 | 371.544 | 101.85% |
| 22 | 16 | Helio Castro-Neves (R) | 98I/108E/G | 31.708 | -0.682 | -0.069 | 230.365 | 370.736 | 102.07% |
| 23 | 2 | Al Unser Jr. | P98/108E/G | 31.724 | -0.698 | -0.016 | 230.248 | 370.549 | 102.12% |
| 24 | 21X | Tony Kanaan (R) | 98I/HRK/F | 31.797 | -0.771 | -0.073 | 229.720 | 369.698 | 102.35% |
| 25 | 20X | Scott Pruett | 98I/XD/F | 31.947 | -0.921 | -0.150 | 228.641 | 367.962 | 102.84% |
| 26 | 36 | Alex Barron (R) | EA/RV8C/G | 32.067 | -1.041 | -0.120 | 227.786 | 366.585 | 103.22% |
| 27 | 25 | Max Papis | 98I/RV8C/F | 32.077 | -1.051 | -0.010 | 227.715 | 366.471 | 103.26% |
| 28 | 19 | Michel Jourdain Jr. | 98I/XD/F | 32.240 | -1.214 | -0.163 | 226.563 | 364.618 | 103.78% |
| 29 | 40X | Adrian Fernandez | 98I/XD/F | 32.260 | -1.234 | -0.020 | 226.423 | 364.392 | 103.85% |
| 30 | 9 | JJ Lehto (R) | 98I/108E/F | 32.330 | -1.304 | -0.070 | 225.933 | 363.603 | 104.07% |
| 31 | 24X | Robby Gordon | 98I/RV8C/F | 32.354 | -1.328 | -0.024 | 225.765 | 363.334 | 104.15% |
| 32 | 98X | Vincenzo Sospiri | EA/RV8C/G | 32.685 | -1.659 | -0.331 | 223.479 | 359.654 | 105.21% |
| 33 | 77X | Arnd Meier | 97I/XD/G | 32.747 | -1.721 | -0.062 | 223.056 | 358.973 | 105.41% |
| 34 | 34 | Dennis Vitolo | 98I/XD/F | 33.524 | -2.498 | -0.777 | 217.886 | 350.653 | 107.91% |
| 35 | 40 | Adrian Fernandez | 98I/XD/F | 33.998 | -2.972 | -0.474 | 214.848 | 345.764 | 109.44% |
| 36 | 6X | Michael Andretti | 009.c/XD/G | 37.946 | -6.920 | -3.948 | 192.495 | 309.790 | 122.15% |