A Temporada do Campeonato Mundial de Motovelocidade de 1998 foi a 50ª edição promovida pela F.I.M.. A temporada começou em Suzuka e encerrou-se em Buenos Aires.[1]
†† = Corrida realizada no sábado.
Os seguintes pilotos e equipes foram inscritos para participar do Campeonato Mundial:[16]
Team | Constructor | Motorcycle | No. | Rider | Rounds | Repsol Honda | Honda | Honda NSR500 | 1 | Mick Doohan | Todas | 2 | Tadayuki Okada | 1–4, 7, 10–14 | 4 | Àlex Crivillé | Todas | Honda NSR500V | 15 | Sete Gibernau | Todas | Suzuki Grand Prix Team | Suzuki | Suzuki RGV500 (XR88) | 3 | Nobuatsu Aoki | Todas | 20 | Luca Cadalora | 7 | 25 | Yukio Kagayama | 2–5 | 27 | Katsuaki Fujiwara | 10–12 | 29 | Keiichi Kitagawa | 1 | 33 | Mark Willis | 13 | Yamaha Team Rainey | Yamaha | Yamaha YZR500 (OWK1) | 5 | Norick Abe | Todas | 12 | Jean-Michel Bayle | 10–12, 14 | 20 | Luca Cadalora | 5–6 | 21 | Kyoji Nanba | 1–4, 9 | Marlboro Team Kanemoto | Honda | Honda NSR500 | 6 | Max Biaggi | Todas | Muz Roc Rennen Sport | MuZ | MuZ 500 | 7 | Doriano Romboni | 1–2 | 16 | Jean-Philippe Ruggia | 7 | 20 | Luca Cadalora | 14 | 77 | Eskil Suter | 4–6, 8–12 | Movistar Honda Pons | Honda | Honda NSR500 | 8 | Carlos Checa | 1–8, 10–14 | 14 | Juan Borja | 8 | 19 | John Kocinski | 1–7, 10–14 | 39 | Gregorio Lavilla | 9 | Honda Gresini | Honda | Honda NSR500 | 9 | Alex Barros | Todas | Team Roberts Marlboro Team Roberts | Modenas | Modenas KR3 | 10 | Kenny Roberts, Jr. | Todas | 28 | Ralf Waldmann | 1–7, 9–14 | Red Bull Yamaha WCM | Yamaha | Yamaha YZR500 | 11 | Simon Crafar | Todas | 55 | Régis Laconi | 1, 3–14 | Shell Advance Racing | Honda | Honda NSR500V | 14 | Juan Borja | 1–7, 10–14 | 18 | Garry McCoy | 1–10, 13 | 26 | Bernard Garcia | 11 | 42 | Craig Connell | 12, 14 | 42 | Craig Connell | 13 | 53 | Russel Wood | 2 | 58 | Felisberto Teixeira | 3 | 71 | Juan Pablo Gianini | 14 | 72 | Fernando Cristóbal | 6 | 72 | Fernando Cristóbal | 8–9 | Dee Cee Jeans Racing Team | Honda | Honda NSR500V | 17 | Jurgen van den Goorbergh | Todas | Tecmas Honda Elf | Honda | Honda NSR500V | 22 | Sébastien Gimbert | 1–6, 10–14 | 26 | Bernard Garcia | 7–9 | F.C.C. TSR | Honda | Honda NSR500V | 23 | Matt Wait | Todas | Team Paton | Paton | Paton V70 C10/4 | 43 | Paolo Tessari | 11–12 | 63 | Gianmaria Liverani | 4 | Yamaha Racing Team | Yamaha | Yamaha YZR500 | 50 | Noriyuki Haga | 1 | BP Yamaha Racing Team | Yamaha | Yamaha YZR500 | 52 | Norihiko Fujiwara | 2 | Team Polini Inoxmacel | Honda | Honda NSR500V | 57 | Fabio Carpani | Todas | Team Zupin | Honda | Honda NSR500V | 60 | Jörg Schöllhorn | 9 | Team Vimto Honda/Paul Bird | Honda | Honda NSR500V | 68 | John McGuinness | 8 | Team Millar Honda Britain | Honda | Honda NSR500V | 88 | Scott Smart | 1, 3–14 | | Legenda | Piloto da Temporada | Piloto Convidado | Piloto Substituto | |
Equipe | Construtor | Moto | Pneu | N.° | Nome do piloto | Rodada | Castrol Honda 250 | Honda | Honda NSR 250 | D | 4 | Stefano Perugini | 1–16 | 54 | Daijirō Katō | 1–16 | Benetton Honda | Honda | Honda NSR 250 | M | 5 | Tōru Ukawa | 1–16 | F.C.C. TSR | Honda | Honda NSR 250 | D | 6 | Haruchika Aoki | 1–16 | Semprucci Biesse-Group | Yamaha | Yamaha TZM 250 | D | 7 | Takeshi Tsujimura | 1–16 | Antena 3 Yamaha | Yamaha | Yamaha TZM 250 | D | 8 | Luis d'Antín | 1–16 | 17 | José Luis Cardoso | 1–16 | 92 | David García | 1–16 | QUB Team Optimum | Honda | TSR-Honda 250 | D | 9 | Jeremy McWilliams | 1–16 | Docshop Racing | Aprilia | Aprilia RSW 250 | D | 11 | Jürgen Fuchs | 1–12 | 15 | Martin Craggill | 1–16 | 85 | Mathias Neukirchen | 13–21 | Rizla Suzuki | Suzuki | Suzuki RGV 250 | D | 12 | Noriyasu Numata | 1–16 | 16 | Johan Stigefelt | 1–16 | OXS Matteoni | Honda | ERP Honda 250 | D | 14 | Davide Bulega | 1–12 | PR2 Mitsubishi Elaion | Aprilia | Aprilia RSW 250 | M | 40 | Gary May | 1–16 | 41 | Federico Gartner | 1–16 | 27 | Sebastián Porto | 1–16 | Strugnell Racing | Yamaha | Yamaha TZM 250 | B | 42 | William Strugnell | 1–16 | Padgetts HRC Shop | Honda | TSR-Honda 250 | D | 24 | Jason Vincent | 1–16 | 82 | Woolsey Coulter (IRN) | 1–16 | Penguin Racing | Honda | ERP Honda 250 | D | 25 | Yasumasa Hatakeyama | 1–16 | Aprilia Grand Prix Racing | Aprilia | Aprilia RSW 250 | D | 31 | Tetsuya Harada | 1–12 | 34 | Marcellino Lucchi | 1–16 | 65 | Loris Capirossi | 13–21 | Scuderia AGV Carrizosa | Honda | TSR-Honda 250 | D | 37 | Luca Boscoscuro | 1–16 | 44 | Roberto Rolfo | 1–16 | Allect Racing | Honda | Honda NSR 250 | F | 63 | Craig Fredrickson | 1–12 | Taylor Racing | Honda | Honda NSR 250 | P | 43 | David Horton | 1–16 | Team Italia | Aprilia | Aprilia RSW 250 | D | 45 | Diego Giugovaz | 1–12 | Nastro Azzurro Aprilia | Aprilia | Aprilia RSW 250 | D | 46 | Valentino Rossi | 1–16 | Petronas Sprinta Team TVK | Honda | Honda NSR 250 | P | 56 | Shahrol Yuzy | 1–12 | Equipo Competition M-3 | Yamaha | Yamaha TZM 250 | B | 61 | Manuel Luque | 1–16 | SBK Sport | Honda | Honda NSR 250 | P | 58 | Eustaquio Gavira | 1–12 | 59 | Ismael Bonilla | 1–16 | 60 | Agostín Escobar | 13–21 | Brunskill Racing | Yamaha | Yamaha TZM 250 | P | 62 | Adam Brunskill | 1–16 | Chesterfield Elf Tech 3 | Honda | Honda NSR 250 | D | 19 | Olivier Jacque | 1–16 | 20 | William Costes | 1–16 | 22 | Matthieu Lagrive | 1–16 | Edo Racing | Yamaha | Yamaha TZM 250 | D | 18 | Osamu Miyazaki | 1–16 | 21 | Franco Battaini | 1–16 | 33 | Jamie Robinson | 1–16 | 47 | Ivan Clementi | 1–16 | Team RCGM | Aprilia | Aprilia RSW 250 | F | 48 | Igor Antonelli | 1–16 | Matteoni Racing | Honda | Honda NSR 250 | F | 49 | Filippo Cotti | 1–16 | BP Yamaha Racing | Yamaha | Yamaha TZM 250 | P | 50 | Shin'ya Nakano | 1–16 | Y.E.S.S. Racing | Yamaha | Yamaha TZM 250 | P | 51 | Naoki Matsudo | 1–16 | Suzuki All Japan | Suzuki | Suzuki RGV 250 | B | 52 | Chōjun Kameya | 1–16 | 55 | Yukio Kagayama | 1–16 | Team Kotake | Honda | Honda NSR 250 | F | 53 | Makoto Tamada | 1–16 | Rgv Spares | Yamaha | Yamaha TZM 250 | D | 64 | Shaun Geronimi | 1–16 | Racing Factory | Honda | Honda NSR 250 | D | 66 | Alex Hofmann | 1–16 | Equipe de France | Honda | Honda NSR 250 | D | 68 | Julien Allemand | 1–16 | 69 | Vincent Philippe | 1–16 | F.P. Racing | Honda | Honda NSR 250 | D | 70 | Franck Poulle | 1–16 | Aprilia France | Aprilia | Aprilia RSW 250 | D | 71 | Hervé Mora | 1–16 | Racing Team Twello | Honda | Honda NSR 250 | D | 77 | André Romein | 1–16 | Team Sotano | Yamaha | Yamaha TZM 250 | D | 72 | José David de Gea | 1–16 | Hernandez Team | Aprilia | Aprilia RSW 250 | D | 73 | Alex Debón | 1–16 | Team Chupa Chups | Honda | Honda NSR 250 | D | 74 | Lucas Oliver Bultó | 1–16 | MRTT Team Bolwerk | Honda | Honda NSR 250 | F | 75 | Maurice Bolwerk | 1–16 | Dee Cee Jeans Racing | Honda | Honda NSR 250 | D | 76 | Jarno Janssen | 1–16 | Johan Jong Brandbom | Honda | Honda NSR 250 | B | 78 | Rudie Markink | 1–16 | Schoenkaper O.Z. | Honda | Honda NSR 250 | B | 79 | Henk van de Lagemaat | 1–16 | Aprilia UK / Blacks Bikeshop | Aprilia | Aprilia RSW 250 | B | 80 | Paul Jones | 1–16 | Honda Britain / Qub Team Optimum | Honda | Honda NSR 250 | B | 81 | Callum Ramsay | 1–16 | Colin Appleyard Racing | Honda | Honda NSR 250 | F | 83 | Shane Norval (AFS) | 1–16 | Team Klingels | Honda | Honda NSR 250 | F | 84 | Mike Baldinger | 1–16 | RS Rallye Sport Gmbh | Honda | Honda NSR 250 | P | 86 | Markus Ober | 1–16 | Imt Racing | Honda | Honda NSR 250 | P | 87 | Adrian Schmidt | 1–16 | Slovnaft Sport Moto | Honda | ERP Honda 250 | P | 88 | Vladimír Častka | 1–16 | Klub Racing Team Znojmo | Yamaha | Yamaha TZM 250 | B | 89 | Radomil Rous | 1–16 | Moto Racing Klub Ostrava | Honda | Honda NSR 250 | P | 90 | Lukáš Vavrečka | 1–16 | Muller Maler Racing | Yamaha | Yamaha TZM 250 | P | 91 | Lars Langer | 1–16 | Team Monlau | Honda | Honda NSR 250 | P | 93 | Iván Silva | 1–16 | Costa Azamar | Honda | Honda NSR 250 | B | 94 | David Ortega | 1–16 | Mitsubishi Mondial | Yamaha | Yamaha TZM 250 | P | 95 | Matias Rios | 1–16 | Pablo Lessio Competicion | Yamaha | Yamaha TZM 250 | P | 96 | Leandro Mulet | 1–16 | Honda-Castrol-Gregorio | Honda | Honda NSR 250 | P | 97 | Diego Ruabén | 1–16 | Recouso Oscar | Yamaha | Yamaha TZM 250 | F | 98 | Gabriel Borgmann | 1–16 | | Legenda | Piloto da Temporada | Piloto Convidado | Piloto Substituto | |
Equipe | Construtor | Moto | Pneu | N.° | Nome do piloto | Rodada | Team Givi Honda LCR | Honda | Honda RS 125 R | D | 2 | Noboru Ueda | 1–16 | 10 | Lucio Cecchinello | 1–16 | Fairbairn Cranes-Black Mamba | Honda | Honda RS 125 R | D | 42 | Chedryian Bresland | 1–16 | Docshop Racing | Aprilia | Aprilia RS 125 R | D | 5 | Masaki Tokudome | 1–16 | Polini Inoxmacel | Honda | Honda RS 125 R | D | 8 | Gianluigi Scalvini | 1–16 | 15 | Roberto Locatelli | 1–16 | 70 | Adrián Araujo | 1–16 | UGT 3000 - RMS | Honda | Honda RS 125 R | M | 9 | Frédéric Petit | 1–16 | Valencia Aspar | Aprilia | Aprilia RS 125 R | D | 11 | José Ramón Ramírez | 1–12 | 59 | Jerónimo Vidal | 1–16 | 73 | Ivan Martínez | 13–21 | Benetton Matteoni Racing | Honda | Honda RS 125 R | D | 13 | Marco Melandri | 1–16 | Scuderia Alfa Nolan | Aprilia | Aprilia RS 125 R | D | 14 | Federico Cerroni | 1–12 | 18 | Paolo Tessari | 1–16 | 24 | Alessandro Romagnoli | 13–21 | Semprucci Biesse-Group | Yamaha | Yamaha TZ 125 | D | 16 | Christian Manna | 1–16 | 62 | Yoshiaki Katō | 1–16 | Southern Cross Sports | Honda | Honda RS 125 R | M | 44 | Judd Greedy | 1–16 | Yamaha Kurz Aral | Yamaha | Yamaha TZ 125 | M | 17 | Juan Enrique Maturana | 1–16 | 41 | Yōichi Ui | 1–16 | Team Pileri | Honda | Honda RS 125 R | P | 19 | Andrea Ballerini | 1–16 | 65 | Andrea Iommi | 1–16 | Mac Motors Liegeois Comp. | Honda | Honda RS 125 R | M | 20 | Masao Azuma | 1–16 | Scrab Competition | Aprilia | Aprilia RS 125 R | G | 21 | Arnaud Vincent | 1–12 | Marlboro Team ADAC | Aprilia | Aprilia RS 125 R | G | 22 | Steve Jenkner | 1–16 | Motoracing | Aprilia | Aprilia RS 125 R | G | 23 | Gino Borsoi | 1–12 | Vasco Rossi Racing | Aprilia | Aprilia RS 125 R | K | 26 | Ivan Goi | 1–16 | OXS Matteoni | Honda | Honda RS 125 R | T | 32 | Mirko Giansanti | 1–16 | Teknic Motorcycle Clothing | Honda | Honda RS 125 R | P | 43 | Peter Galvin | 1–16 | Taylor Racing | Honda | Honda RS 125 R | G | 45 | Jay Taylor | 1–12 | Christopher West Plumbing | Honda | Honda RS 125 R | P | 46 | Anthony West | 1–16 | Team Italia | Aprilia | Aprilia RS 125 R | P | 47 | Riccardo Chiarello | 1–16 | Team RS | Honda | Honda RS 125 R | K | 48 | Massimiliano Sabbatani | 1–16 | Team Axo Polini | Honda | Honda RS 125 R | P | 49 | Andrea Zappa | 1–16 | M'Project | Honda | Honda RS 125 R | G | 50 | Yūzō Fujioka | 1–16 | J. Racing | Yamaha | Yamaha TZ 125 | G | 51 | Takashi Akita | 1–16 | Tube Riders & Ablecom | Honda | Honda RS 125 R | P | 52 | Hiroyuki Kikuchi | 1–16 | S.P. Tadao Racing | Yamaha | Yamaha TZ 125 | P | 53 | Nobuyuki Ōsaki | 1–16 | Castrol Team Harc Pro | Honda | Honda RS 125 R | T | 54 | Kazuhiro Takao | 1–16 | Matteoni Racing | Honda | Honda RS 125 R | D | 55 | Manuel Poggiali | 1–16 | RRC Prakash RAO | Honda | Honda RS 125 R | D | 56 | Magilai Meganathan | 1–16 | Echo Team Berner | Honda | Honda RS 125 R | D | 58 | Álvaro Molina | 1–16 | Esparragoso IGM | Yamaha | Yamaha TZ 125 | D | 61 | Vicente Esparragoso | 1–16 | Ricci Corse | Honda | Honda RS 125 R | D | 63 | Marco Tresoldi | 1–16 | Ciarom-MotoSprint | Aprilia | Aprilia RS 125 R | D | 64 | Claudio Cipriani | 1–16 | Honda France | Honda | Honda RS 125 R | K | 67 | Randy De Puniet | 1–16 | Ipone Dussauge Racing | Honda | Honda RS 125 R | D | 68 | Nicolas Dussauge | 1–16 | Team RMS | Honda | Honda RS 125 R | D | 69 | Jimmy Petit | 1–16 | Team TMR | Honda | Honda RS 125 R | P | 71 | Josep Sarda | 1–16 | Team TJT | Honda | Honda RS 125 R | D | 72 | Sebastián Perello | 1–16 | Ep Bos Electro Elburg | Honda | Ega Honda | M | 74 | Hans Koopman | 1–16 | Team Kroegman | Yamaha | Yamaha TZ 125 | M | 75 | Wim Kroegman | 1–16 | Le Coq Fight Racing | Honda | Honda RS 125 R | T | 76 | Harold de Haan | 1–16 | R.T.D. Doodeman Dakdekkers | Honda | Honda RS 125 R | T | 77 | Ronnie Timmer | 1–16 | Luvro Ramaker Toyota Racing | Honda | Honda RS 125 R | T | 78 | Wilhelm Van Leeuwen | 1–16 | Via Digital Team | Aprilia | Aprilia RS 125 R | T | 7 | Emilio Alzamora | 1–16 | 60 | Alfonso Gonzalez Nieto (Fonsi) | 1–16 | 29 | Ángel Nieto Jr | 1–16 | 79 | Pablo Nieto | 1–16 | Honda Britain / Ron Haslam | Honda | Honda RS 125 R | G | 80 | Leon Haslam | 1–16 | L Rumney / Garstang Cleaning | Honda | Honda RS 125 R | P | 81 | Chris Palmer | 1–16 | Racing Lines / Clive Horton | Honda | Honda RS 125 R | P | 82 | John Pearson | 1–16 | Ulster Racing / Eddie Mateer | Honda | Honda RS 125 R | P | 83 | David Mateer | 1–16 | Agip Esch Racing | Honda | Honda RS 125 R | P | 84 | Reinhard Stolz | 1–16 | UGT 3000 | Honda | Honda RS 125 R | G | 3 | Tomomi Manako | 1–16 | 4 | Kazuto Sakata | 1–16 | 39 | Jaroslav Huleš | 1–16 | 85 | Klaus Nöhles | 1–16 | Yamaha Loffler Racing | Yamaha | Yamaha TZ 125 | M | 86 | Oliver Perschke | 1–16 | Hein Gericke Castrol Jr | Honda | Honda RS 125 R | M | 87 | Dirk Heidolf | 1–16 | Motorrad B.U.S. Levior Racing | Yamaha | Yamaha TZ 125 | T | 88 | Maik Stief | 1–16 | Repsol Team | Honda | Honda RS 125 R | T | 89 | Igor Kaláb | 1–16 | Wernberger - Team Hanusch | Honda | Honda RS 125 R | M | 90 | Jakub Smrž | 1–16 | 91 | Martin Psotny | 1–16 | Delta Uamk | Honda | Honda RS 125 R | M | 92 | Michal Březina | 1–16 | Telemark Racing | Honda | Honda RS 125 R | M | 93 | Bohuslav Seifert | 1–16 | Matsuo-Daido-Yuasa-tam | Honda | Honda RS 125 R | M | 94 | Cristiano Vieira | 1–16 | Amauri-Revista Moto! | Honda | Honda RS 125 R | G | 95 | Cesar Barros | 1–16 | Motosistem 1 | Honda | Honda RS 125 R | M | 97 | Silvio Cesar Zequim | 1–16 | | Legenda | Piloto da Temporada | Piloto Convidado | Piloto Substituto | |
- Sistema de Pontuação
São atribuídos pontos aos 15 pilotos mais bem classificados que terminem a corrida.
Posição | 1° | 2° | 3° | 4° | 5° | 6° | 7° | 8° | 9° | 10° | 11° | 12° | 13° | 14° | 15° |
Pontos | 25 | 20 | 16 | 13 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Cor | Resultado | Ouro | Vencedor | Prata | 2.º lugar | Bronze | 3.º lugar | Verde | Terminou, nos pontos | Azul | Terminou, sem pontos | Púrpura | Ret – Retirou-se | Vermelho | NQ – Não qualificado | Preto | DSQ – Desqualificado | Branco | NL – Não largou | C – Corrida cancelada | Azul claro | AT – Apenas Treino | Sem cor | NP – Não participou | Les – Lesionado | EX – Excluído | Negrito – Pole position Itálico – Volta mais rápida † - Classificado por ter completado mais de 90% da prova |
| Cor | Resultado | Ouro | Vencedor | Prata | 2.º lugar | Bronze | 3.º lugar | Verde | Terminou, nos pontos | Azul | Terminou, sem pontos | Púrpura | Ret – Retirou-se | Vermelho | NQ – Não qualificado | Preto | DSQ – Desqualificado | Branco | NL – Não largou | C – Corrida cancelada | Azul claro | AT – Apenas Treino | Sem cor | NP – Não participou | Les – Lesionado | EX – Excluído | Negrito – Pole position Itálico – Volta mais rápida † - Classificado por ter completado mais de 90% da prova |