Hi Jan,
They came with Bridgestones or Dunlops.
I know the Dunlops were K87 Rear, F3 front, which were later changed to F6. The difference between the F3 and F6 was very minor I believe.
Yamiya sell new Dunlops- a K87 MkII Rear and an F11 front in original sizes. I don't think they can be bought in Australia.
I can't remember the name of the original Bridgestones- maybe someone else can help?
Regards,
Steven.