He started his career at the age of 18 years in a three-year self- restored and tuned, historic Alfa Romeo and came across a test in a Ford Escort Cosworth by Wolf tuner to modern racing.
He was runner-up in 2000 and 2002 Porsche Carrera Cup over the years. In 2001 he participated with the team in the Zakspeed Chrysler Viper GTS -R 's 24-hour race at the Nürburgring. In 2002 he won the " Autocar Drift Challenge ", a show event, attend the racers from many racing series, including Formula 1. In 2003, he reached his greatest success when he won the 996 GT3 Cup double win in the Porsche Carrera Cup Germany and in the Porsche Michelin Supercup on his Porsche.
After he worked in 2004 for Audi as a test driver, in which he won at the Nürburgring with an Abt- Audi TT -R in the 24 -hour race along with Christian Abt, Karl Wendlinger and Patrick Huisman fourth place, he was in 2005 in the Audi A4 DTM win the 14th overall in the DTM. His best season with fifth place result was achieved by the Audi drivers at the season finale at the Hockenheimring.
Also in the 2006 DTM season Stipplers was back with an Audi A4 from the previous year at the start, he drove for Audi Sport Team Rosberg. A year later, he drove in the Swedish Touring Car Championship an Audi RS4 and gained some success there.
For the 2008 season Stipplers hired in the ADAC GT Masters. Here he first drove for HEICO Racing in a Porsche 997 GT3 Cup S, with which he could a race at the Nürburgring, along with Lance David Arnold win. Later he moved sporadically Mühlner, also employing a Porsche 997 GT3 Cup S.
His main focus was already from the year 2008, however, on the development of the Audi R8 LMS, a customer sport race car developed by Audi GT 3 category. Here, the trained mechanic and engineer could fully contribute and the various stages of evolution of the Audi R8, many national (VLN Nürburgring ) and international success (FIA GT / Blancpain Endurance Series / Grand Am / 24 hour race on the Nürburgring, Spa -Francorchamps, Daytona ) retract that in winning the two major 24 hour race for GT cars peaked in 2012 at the Nürburgring and Spa- Francorchamps.
In 2013, his 10th year in the service of Audi, he started with a 2nd place in the GT class at the 24 Hours of Daytona in the season, in which the victory after 24 hours by the blink of 1.2 seconds missed been. At the Nürburgring he scored with a new lap record at the 24 hour race in pole position and finished the race as best-placed Audi 5th place 2013 contests in addition to the 24 hour race in Nürburg / Spa -Francorchamps and Daytona the races of the FIA GT Series, Blancpain Endurance Series and VLN Nürburgring.