Obermaier upgrade to a new Porsche 962C in 1987 as well as new sponsorship from French company Primagaz brought by new driver Pierre Yver. The highlight of the year was a second-place finish at the 24 Hours of Le Mans, one of only 14 cars to complete the race duration. Meanwhile, Grohs competed in Porsche's new 944 Turbo Cup series, finishing in third place in 1986 and 1988. Lässig and Yver returned for a full World Championship campaign in 1989 but earned no points over the season. Otto Altenbach joined the team as a driver and team principal in 1990, purchasing a second 962C for the team but the season was yet again fruitless. Obermaier partnered with Antoine Salamin's eponymous team for the 1991 campaign with the best finish of fourth at the Nürburgring for Altenbach and Jürgen Oppermann.