Daijiro Katoh was quickest in Saturday morning 250cc practice and Youchi UI was quickest in Satruday morning 125cc practice at Suzuka Circuit for the Grand Prix of Japan. Top times follow:

250cc Practice
1. Katoh 2:08.431
2. Locatelli 2:09.279
3. Nieto 2:09.289
4. Matsudo 2:09.575
5. Melandri 2:09.600
6. Battaini 2:09.617
7. Debon 2:09.908
8. Alzamora 2:09.978
9. McWilliams 2:09.979
10. Sekiguchi 2:10.739

Katja Poensgen was 31st quickest of the 34 250cc entrants, at 2:18.443.


125cc Practice
1. Ui 2:14.597
2. Azuma 2:15.211
3. Perugini 2:15.518
4. Cecchinello 2:15.607
5. Ueda 2:15.627
6. Giansanti 2:16.035
7. Elias 2:16.120
8. Borsoi 2:16.174
9. A. Nieto 2:16.470
10. Sanna 2:16.563