On offer are the purple-marked ultrasoft, the red-marked supersoft and the yellow-marked soft, with drivers obliged to use the latter two at some point during the race, and to save a set of ultras for Q3.
The teams are free to choose the compounds for the remaining 10 sets of their 13-set allocation for the weekend. Details of each team’s choices will be released near to the event.
Tyre compounds for Singapore:
Tyre compounds nominated so far in 2017:
This year's Singapore round takes place on September 15-17 and tickets are available here.