Race No. 17
Texaco Grand Prix of Houston
Houston, Texas
October 2-4, 1998
Saturday Individual Practice Report
| pos | car | driver | chassis engine tire | laptime | gap to leader | gap to next | mph | km/h | 110% rule |
| 1 | 16 | Helio Castro-Neves (R) | 98I/108E/G | 60.754 | 0.000 | 0.000 | 90.483 | 145.618 | n/a |
| 2 | 40 | Adrian Fernandez | 98I/XD/F | 60.896 | -0.142 | -0.142 | 90.272 | 145.279 | n/a |
| 3 | 27 | Dario Franchitti | 98I/HRK/F | 61.117 | -0.363 | -0.221 | 89.946 | 144.753 | 100.48% |
| 4 | 8 | Bryan Herta | 98I/XD/F | 61.148 | -0.394 | -0.031 | 89.900 | 144.680 | 100.53% |
| 5 | 1 | Alex Zanardi | 98I/HRK/F | 61.280 | -0.526 | -0.132 | 89.706 | 144.368 | 100.75% |
| 6 | 33 | Patrick Carpentier | 98I/108E/F | 61.293 | -0.539 | -0.013 | 89.687 | 144.338 | 100.77% |
| 7 | 26 | Paul Tracy | 98I/HRK/F | 61.421 | -0.667 | -0.128 | 89.500 | 144.037 | 100.98% |
| 8 | 11 | Christian Fittipaldi | 009.c/XD/G | 61.473 | -0.719 | -0.052 | 89.425 | 143.915 | 101.07% |
| 9 | 6 | Michael Andretti | 009.c/XD/G | 61.639 | -0.885 | -0.166 | 89.184 | 143.527 | 101.34% |
| 10 | 24X | Robby Gordon | 98I/RV8C/F | 61.750 | -0.996 | -0.111 | 89.023 | 143.269 | 101.52% |
| 11 | 12 | Jimmy Vasser | 98I/HRK/F | 61.759 | -1.005 | -0.009 | 89.011 | 143.249 | 101.54% |
| 12 | 18 | Mark Blundell | 98I/108E/F | 61.798 | -1.044 | -0.039 | 88.954 | 143.158 | 101.60% |
| 13 | 25 | Max Papis | 98I/RV8C/F | 61.869 | -1.115 | -0.071 | 88.852 | 142.994 | 101.72% |
| 14 | 21 | Tony Kanaan (R) | 98I/HRK/F | 61.875 | -1.121 | -0.006 | 88.844 | 142.980 | 101.73% |
| 15 | 36 | Alex Barron (R) | EA/RV8C/G | 61.897 | -1.143 | -0.022 | 88.812 | 142.929 | 101.76% |
| 16 | 3 | Andre Ribeiro | P98/108E/G | 61.954 | -1.200 | -0.057 | 88.730 | 142.798 | 101.86% |
| 17 | 2 | Al Unser Jr. | P98/108E/G | 61.955 | -1.201 | -0.001 | 88.729 | 142.795 | 101.86% |
| 18 | 9 | JJ Lehto (R) | 98I/108E/F | 62.097 | -1.343 | -0.142 | 88.526 | 142.469 | 102.09% |
| 19 | 17 | Mauricio Gugelmin | 98I/108E/F | 62.166 | -1.412 | -0.069 | 88.428 | 142.311 | 102.20% |
| 20 | 5 | Gil de Ferran | 98I/HRK/G | 62.181 | -1.427 | -0.015 | 88.406 | 142.276 | 102.23% |
| 21 | 19 | Michel Jourdain Jr. | 98I/XD/F | 62.433 | -1.679 | -0.252 | 88.050 | 141.702 | 102.64% |
| 22 | 99 | Greg Moore | 98I/108E/F | 62.491 | -1.737 | -0.058 | 87.968 | 141.571 | 102.74% |
| 23 | 10 | Richie Hearn | 009.c/XD/F | 62.630 | -1.876 | -0.139 | 87.773 | 141.256 | 102.97% |
| 24 | 20 | Scott Pruett | 98I/XD/F | 62.663 | -1.909 | -0.033 | 87.726 | 141.182 | 103.02% |
| 25 | 7 | Bobby Rahal | 98I/XD/F | 62.681 | -1.927 | -0.018 | 87.701 | 141.141 | 103.05% |
| 26 | 24 | Robby Gordon | 98I/RV8C/F | 62.916 | -2.162 | -0.235 | 87.374 | 140.614 | 103.44% |
| 27 | 77X | Arnd Meier | 97I/XD/G | 63.222 | -2.468 | -0.306 | 86.951 | 139.934 | 103.94% |
| 28 | 77 | Arnd Meier | 97I/XD/G | 63.641 | -2.887 | -0.419 | 86.378 | 139.012 | 104.63% |
| 29 | 98X | Vincenzo Sospiri | EA/RV8C/G | 63.890 | -3.136 | -0.249 | 86.042 | 138.471 | 105.04% |
| 30 | 34 | Dennis Vitolo | 98I/XD/F | 64.849 | -4.095 | -0.959 | 84.769 | 136.423 | 106.62% |
| 31 | 98 | Vincenzo Sospiri | EA/RV8C/G | 66.842 | -6.088 | -1.993 | 82.242 | 132.355 | 109.89% |