Didier Theys belonged in the 1990s and 2000s, the most versatile international racers. He denied single-seater racing in Europe and the U.S., drove a sports car and endurance racing, touring car racing and rallies.
His career began Theys 1979 in the Dutch Formula Ford 1600 Championship. In 1980 he moved to Formula 3 and went to the team of Sergé Saulnier everywhere at the start, where the Frenchman announced his team. He raced in the French and German Championship, as well as in the European Championship. His biggest success in this series was the third place in the race in Monaco in 1985. According to the fifth season in Formula 3, interrupted by short excursions into the group -C - Cup for Welter Racing and Brun Motorsport seemed the career of the Belgian in the small to sink formula classes.
As early as 1985 he had been in the U.S. but in the super - Vau - USA Championship at the start and gradually become a race win eighth in the overall standings. A year later he was able to win this race series. Theys remained in the United States and became a regular starter in the Champ Car series. From 1987 to 1993 he was at 47 races at the start - including the 500 miles of Indianapolis in 1989, 1990 and 1993, his best finish was a third place finish in Miami in 1988..
Internationally known, however, the Belgians was his success in sports car racing. In 1982 he made his debut at the 24 Hours of Le Mans. In 1987, he won the 24 - hour race at Spa-Francorchamps. In 1998, he won on a Ferrari 333SP at the 24 Hours of Daytona and the 12 Hours of Sebring. 1999 when Audi made his debut at La Sarthe, Theys was one of the factory driver and drove the Audi R8R together with Emanuele Pirro and Frank Biela in third place overall. In 2002, he was able to repeat his success in Daytona and he was master of the Grand-Am Sports Car Series. By 2008, he was active in the American Le Mans Series and the Le Mans Series and retired from active racing back then.