The Supercars 2018 calendar will be revealed next month but there won't be any expansion into Asia.
The category had hoped to introduce at least one race in Asia in 2018 before additional events in 2019 but CEO James Warburton admits the championship will feature Australian and New Zealand events only next year.
Warburton spent the weekend at the Singapore Formula 1 Grand Prix and describes his discussion with Formula 1 about featuring at their race weekends as positive.
"It was a very positive weekend," Warburton told Supercars.com.
"Wherever you are in the globe people have an enormous amount of respect for Supercars. People know and love the product.