Race No. 5
Rio 400
Emerson Fittipaldi Speedway
at Nelson Piquet International Raceway Rio de Janeiro, Brazil
May 8-10, 1998
Individual Friday MorningPractice Report
Note: cars ran only between one and four laps.The second group never went out. We assume weather stopped the session
| pos | car | driver | chassis engine tire | laptime | gap to leader | gap to next | mph | km/h | 110% rule |
| 1 | 1 | Alex Zanardi | 98I/HRK/F | 42.268 | 0.000 | 0.000 | 158.758 | 255.442 | n/a |
| 2 | 40 | Adrian Fernandez | 98I/XD/F | 42.458 | -0.190 | -0.190 | 158.048 | 254.299 | n/a |
| 3 | 26 | Paul Tracy | 98I/HRK/F | 42.507 | -0.239 | -0.049 | 157.866 | 254.006 | 100.34% |
| 4 | 10 | Richie Hearn | 009.c/XD/F | 42.908 | -0.640 | -0.401 | 156.390 | 251.632 | 101.29% |
| 5 | 2 | Al Unser Jr. | P98/108E/G | 43.381 | -1.113 | -0.473 | 154.685 | 248.889 | 102.40% |
| 6 | 12 | Jimmy Vasser | 98I/HRK/F | 44.042 | -1.774 | -0.661 | 152.364 | 245.153 | 103.96% |
| 7 | 36 | Alex Barron (R) | 98I/RV8C/G | 44.278 | -2.010 | -0.236 | 151.552 | 243.846 | 104.52% |
| 8 | 21 | Tony Kanaan (R) | 98I/HRK/F | 44.964 | -2.696 | -0.686 | 149.239 | 240.126 | 106.14% |
| 9 | 3 | Andre Ribeiro | P98/108E/G | 45.893 | -3.625 | -0.929 | 146.218 | 235.265 | 108.33% |
| 10 | 7 | Bobby Rahal | 98I/XD/F | 47.482 | -5.214 | -1.589 | 141.325 | 227.392 | 112.08% |
| 11 | 99X | Greg Moore | 98I/108E/F | 47.865 | -5.597 | -0.383 | 140.194 | 225.573 | 112.99% |
| 12 | 5X | Gil de Ferran | 98I/HRK/G | 48.114 | -5.846 | -0.249 | 139.469 | 224.405 | 113.58% |
| 13 | 20X | Scott Pruett | 98I/XD/F | 48.864 | -6.596 | -0.750 | 137.328 | 220.961 | 115.35% |
| 14 | 24 | Hiro Matsushita | 98I/RV8C/F | 51.036 | -8.768 | -2.172 | 131.484 | 211.557 | 120.47% |
| 15 | 8 | Bryan Herta | 98I/XD/F | 53.357 | -11.089 | -2.321 | 125.764 | 202.355 | 125.95% |
| 16 | 6X | Michael Andretti | 009.c/XD/G | 53.607 | -11.339 | -0.250 | 125.178 | 201.411 | 126.54% |