Hi Chris: Thanks! They are Ronal R 39. 17" x 8".
They have proper for the 164 5 x 98 bolt pattern. They need only 5 mm spacers in the rear to fit the 164. Hubcentric rings are a good idea too. Actually, as much as I like them, I just bought yet another set to put on my 164 (I am a wheel "nut" and keep changing them!). Jason from Alfissimo sold them to me. They have been discontinued, but he may still have a set. I see you are in Australia, but I willl probably be selling these soon, FYI. The front wheels have some small imperfections (scuffs), but I would let them go for a good price. Would of course include spacers / hubrings.
Sam