Race No. 4
Bosch Spark Plug Grand Prix Presented by Toyota
Nazareth Speedway — Nazareth, PA
April 24-26, 1998
Friday Practice Combined
| 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 | 18.888 | 0.000 | 0.000 | 180.305 | 290.111 | n/a |
| 2 | 99 | Greg Moore | 98I/108E/F | 18.962 | -0.074 | -0.074 | 179.601 | 288.979 | n/a |
| 3 | 11 | Christian Fittipaldi | 009.c/XD/G | 19.008 | -0.120 | -0.046 | 179.167 | 288.279 | 100.44% |
| 4 | 17 | Mauricio Gugelmin | 98I/108E/F | 19.077 | -0.189 | -0.069 | 178.519 | 287.236 | 100.80% |
| 5 | 6 | Michael Andretti | 009.c/XD/G | 19.080 | -0.192 | -0.003 | 178.491 | 287.191 | 100.82% |
| 6 | 40 | Adrian Fernandez | 98I/XD/F | 19.081 | -0.193 | -0.001 | 178.481 | 287.176 | 100.82% |
| 7 | 26 | Paul Tracy | 98I/HRK/F | 19.115 | -0.227 | -0.034 | 178.164 | 286.665 | 101.00% |
| 8 | 27 | Dario Franchitti | 98I/HRK/F | 19.137 | -0.249 | -0.022 | 177.959 | 286.336 | 101.12% |
| 9 | 33 | Patrick Carpentier | 98I/108E/F | 19.167 | -0.279 | -0.030 | 177.680 | 285.888 | 101.28% |
| 10 | 21 | Tony Kanaan (R) | 98I/HRK/F | 19.238 | -0.350 | -0.071 | 177.025 | 284.833 | 101.65% |
| 11 | 1 | Alex Zanardi | 98I/HRK/F | 19.243 | -0.355 | -0.005 | 176.979 | 284.759 | 101.68% |
| 12 | 8 | Bryan Herta | 98I/XD/F | 19.255 | -0.367 | -0.012 | 176.868 | 284.581 | 101.74% |
| 13 | 5X | Gil de Ferran | 98I/HRK/G | 19.260 | -0.372 | -0.005 | 176.822 | 284.507 | 101.77% |
| 14 | 25 | Max Papis | 98I/RV8C/F | 19.301 | -0.413 | -0.041 | 176.447 | 283.903 | 101.99% |
| 15 | 12 | Jimmy Vasser | 98I/HRK/F | 19.310 | -0.422 | -0.009 | 176.365 | 283.771 | 102.03% |
| 16 | 20 | Scott Pruett | 98I/XD/F | 19.363 | -0.475 | -0.053 | 175.882 | 282.994 | 102.31% |
| 17 | 24 | Robby Gordon | 98I/RV8C/F | 19.423 | -0.535 | -0.060 | 175.339 | 282.120 | 102.63% |
| 18 | 10X | Richie Hearn | 009.c/XD/F | 19.502 | -0.614 | -0.079 | 174.628 | 280.977 | 103.05% |
| 19 | 9 | JJ Lehto (R) | 98I/108E/F | 19.577 | -0.689 | -0.075 | 173.959 | 279.900 | 103.45% |
| 20 | 7 | Bobby Rahal | 98I/XD/F | 19.593 | -0.705 | -0.016 | 173.817 | 279.672 | 103.53% |
| 21 | 19 | Michel Jourdain Jr. | 98I/XD/F | 19.604 | -0.716 | -0.011 | 173.720 | 279.515 | 103.59% |
| 22 | 5 | Gil de Ferran | 98I/HRK/G | 19.608 | -0.720 | -0.004 | 173.684 | 279.458 | 103.61% |
| 23 | 18 | Mark Blundell | 98I/108E/F | 19.671 | -0.783 | -0.063 | 173.128 | 278.563 | 103.94% |
| 24 | 8X | Bryan Herta | 98I/XD/F | 19.678 | -0.790 | -0.007 | 173.066 | 278.464 | 103.98% |
| 25 | 98 | PJ Jones | 98I/RV8C/G | 19.723 | -0.835 | -0.045 | 172.672 | 277.828 | 104.22% |
| 26 | 36 | Alex Barron (R) | 98I/RV8C/G | 19.853 | -0.965 | -0.130 | 171.541 | 276.009 | 104.90% |
| 27 | 34 | Dennis Vitolo | 98I/XD/F | 20.153 | -1.265 | -0.300 | 168.987 | 271.900 | 106.49% |
| 28 | 2 | Al Unser Jr. | P98/108E/G | 20.306 | -1.418 | -0.153 | 167.714 | 269.852 | 107.30% |
| 29 | 77 | Arnd Meier | 97I/XD/G | 20.509 | -1.621 | -0.203 | 166.054 | 267.181 | 108.37% |
| 30 | 20X | Scott Pruett | 98I/XD/F | 20.515 | -1.627 | -0.006 | 166.005 | 267.103 | 108.40% |
| 31 | 3 | Andre Ribeiro | P98/108E/G | 20.538 | -1.650 | -0.023 | 165.819 | 266.804 | 108.52% |
| 32 | 3X | Andre Ribeiro | P98/108E/G | 20.575 | -1.687 | -0.037 | 165.521 | 266.324 | 108.72% |
| 33 | 10 | Richie Hearn | 009.c/XD/F | 20.682 | -1.794 | -0.107 | 164.665 | 264.946 | 109.28% |
| 34 | 40X | Adrian Fernandez | 98I/XD/F | 21.439 | -2.551 | -0.757 | 158.851 | 255.591 | 113.28% |