The international motorsports governing body at the time, FISA, had instituted a policy of long-term contracts for one circuit per Grand Prix. The choice for the German Grand Prix was between the new Nürburgring and Hockenheim. It was the latter that was chosen and it stayed there for the next 20 years. The 1986 event was one where a number of the leaders ran on fumes at the very end; top three drivers Piquet, Senna and Prost were all running out of fuel and although Brazilians Piquet and Senna finished 1–2, Prost finished sixth after his car was completely drained of fuel. The 1988 race was run in wet conditions; these conditions were particularly treacherous at Hockenheim because the circuit ran through a forest and the thick moisture from the rain tended to hang in the air because of the trees that surrounded the track. Even when it was not raining, the track still did not dry. Senna (now driving a McLaren) took advantage of his skill in the wet to win over his teammate Prost. The 1989 race was near the height Prost and Senna's famous rivalry and this race was one where the two McLaren teammates drove on their absolute limits throughout the entire race. Prost's gearbox malfunctioned and lost use of sixth gear on the second to last lap and Senna passed him to take the victory. Senna won the next year's race as well from Italian Alessandro Nannini. The 1992 race saw further changes to the Ostkurve after a crash that Érik Comas had there in 1991; it was turned into a more complex chicane rather than simple left-right chicane with a tyre wall in the middle. 1994 saw a further change to the third chicane to make it slower in the aftermath of the 1994 San Marino Grand Prix.