Shahram Mahmoudi topped all scorers with 22 points and Japan’s Kunihiro Shimizu also scored 22 points.
Iran moved up to third place in the table behind Poland and France.
Raul Lozano’s men have been scheduled to meet China on Thursday.
Eight strong teams are competing for the Men’s Olympic Qualification Tournament from May 28 to June 5 at the Tokyo Metropolitan Gymnasium.
The qualification tournament in Tokyo, which also serves as the Asian qualification tournament, will provide the top ranked Asian team and the top three ranked teams with the four Rio 2016 Olympic Games qualification slots available.
