The 1998 All Japan Grand Touring Car Championship was the fifth season of the All-Japan Grand Touring Car Championship. The GT500 champion was the #23 Pennzoil NISMO Nissan Skyline GT-R driven by Érik Comas and Masami Kageyama and the GT300 class champion was the #25 Team Taisan Jr with Tsuchiya MR-2 driven by Keiichi Suzuki and Shingo Tachi.
References
1998 All Japan Grand Touring Car Championship Wikipedia(Text) CC BY-SA