4 February 1990 - Daytona 24 Hours - IMSA - International Motor Sport Association
Bob Wollek, Sarel van der Merwe & Dominic Dobson 3rd in a Porsche 962 C, 6 laps behind the winning Jaguar XJR-12 driven by Davy Jones, Jan Lammers & Andy Wallace
11 March 1990 - Fuji 500 km - All Japan Sports Prototype Championship
George Fouché and Steven Andskar 3rd in Porsche 962
17 March 1990 - Sebring 12 Hours - IMSA - International Motor Sport Association
John Hotchkis, Jim Adams & John Hotchkis Jr. 4th in a Porsche 962
3 April 1990 - Inter Challenge Fuji 1000 km - All Japan Sports Prototype Championship
The race was reduced to 500 km because of rain but stopped after just 7 laps and cancelled.
22 July 1990 - Fuji 500 Miles - All Japan Sports Prototype Championship
George Fouché and Steven Andskar 2nd in Porsche 962, 2 laps behind winning Nissan R90CP
26 August 1990 - Suzuka 1000 km - All Japan Sports Prototype Championship
Akihiko Nakaya and Volker Weidler 2nd in Porsche 962
16 September 1990 - Sugo 500 km - All Japan Sports Prototype Championship
Stanley Dickens and Will Hoy 2nd in Porsche 962
7 October 1990 - Fuji 1000 km - All Japan Sports Prototype Championship
Stanley Dickens and Will Hoy 2nd in Porsche 962, 5 laps behind winning Toyota 89C-V of Roland Ratzenberger and Naoki Nagasaka