Aguri Suzuki
For the 1997 season, Motoyama stepped up to the premier GT500 class, driving alongside Hoshino in the Calsonic Nissan Skyline GT-R for Team Impul. Motoyama switched teams for the 1998 season, partnering up with Aguri Suzuki and the new Autobacs Racing Team Aguri squad and co-driver Takeshi Tsuchiya. Motoyama finished 11th in the 1997 standings, and 12th in 1998.