The 1989 San Marino Grand Prix (formally the IX Gran Premio Kronenbourg di San Marino) was a Formula One motor race held at the Imola circuit on 23 April 1989. It was the second race of the 1989 Formula One season. The race was overshadowed by Gerhard Berger's massive accident at Tamburello corner. The race was stopped for one hour and restarted. The race was won by Ayrton Senna who started from pole position. The Grand Prix had a total of 39 entrants, the largest amount in Formula One history. This record was equalled in the following 14 races of the season but, as of 2022, it has not been broken. Qualifying Pre-qualifying report As at the previous race in Brazil, the Brabhams were easily the fastest cars in the Friday morning session. Stefano Modena was quickest on this occasion, with Martin Brundle in second. Alex Caffi pre-qualified his Dallara in third, with Nicola Larini's Osella in fourth. Only four cars went through from this session now that the injured Philippe Streiff had been replaced at AGS by Gabriele Tarquini, who had left the abortive FIRST team. Onyx improved on their showing in Brazil, with Bertrand Gachot just missing out on pre-qualification in fifth place. The EuroBrun of Gregor Foitek was sixth, ahead of the second Osella of Piercarlo Ghinzani. The other Onyx of Stefan Johansson was eighth, followed by the second AGS of Joachim Winkelhock. Tenth was the Coloni of Pierre-Henri Raphanel, just ahead of the two Zakspeeds of Aguri Suzuki and Bernd Schneider, the Japanese driver outpacing his more experienced team-mate. Nearly four seconds adrift at the bottom of the time sheets was the Rial of Volker Weidler, despite the German trying all three of the team's cars. Pre-qualifying classification Qualifying report The only change to the entry list for the San Marino Grand Prix was the arrival of Gabriele Tarquini in the second car of the small AGS team, which had only run one car in Brazil after Philippe Streiff had suffered career ending injuries in pre-season testing. A record 39 cars were entered for the Grand Prix, although only 26 were allowed to start the race. After their defeat in Brazil, McLaren spent eight days testing at Imola prior to the San Marino Grand Prix. According to Ayrton Senna, they tested everything on the McLaren MP4/5, including aerodynamics, suspension, brakes and fuel consumption. It worked for