So after 29,378km, my 2 front tyres are just about 1mm away from the thread wear indicator. These stock tyres are Kumho Solus KH15 215/65/16 98H. The rears are still at around 3-4mm so still OK. Though these 4 wheels were supposed to be rotated/exchanged during the vehicle's annual servicing. Hmmm.... Anyway, I went to Costco Auburn this evening (7pm) and had them replace the fronts with Michelin Energy XM2 . Cost is AU$189.00 each; job took around 20 minutes. I'll post my thoughts on these XM2s perhaps after using them for 500~1,000km.