1983 Grand Prix motorcycle racing season championship. In a fitting end to a successful career, Roberts won his last-ever Grand Prix race, however Spencer was able to secure second place to claim the world championship. The two riders dominated the season with each claiming six victories and six pole positions in the 12 race series. The following Grands Prix were scheduled to take place in 1983: Points are awarded to the top ten finishers. A rider has to finish the race to earn points. 1983 Grand Prix motorcycle racing season The 1983 Grand Prix motorcycle racing season was the 35th F.I.M. Road racing World Championship season.
1989 Grand Prix motorcycle racing season the inaugural Grand Prix in his home country. Another Australian made his Grand Prix debut for the Rothmans Honda team with Mick Doohan scoring a third-place finish at the Hockenheimring. The FIM awarded half points for the rain-drenched Belgian Grand Prix after organisers restarted the race three times contrary to FIM race regulations. The Nations Grand Prix at Misano was boycotted by most of the top riders for safety reasons. Sito Pons won a second consecutive 250 championship for Honda while Spanish teenager, Àlex Crivillé won the 125 crown on a JJ Cobas. Derbi rider Manuel Herreros had the honor