Have just come back (last week)from a 15000k trip (about 8000 on crap the rest on black stuff) to Kimberly and the dessert roads between ACT and North, The tyres have now done 40K and appear to be about half worn (just) they handled everything I threw at them :D. I did get one punture coming down the Tanami, that was just an unlucky big rock. We went up the Old Ghan track with all the rail spikes with no trouble at all, one Hilux with us had 4 puntures in his bridgestones for the trip, but he now knows what air pressure means. I ran 23 lb cold on the dirt.
The biggest problem is that if you do need a replacement up there you will wait at least a week if the tyre can be flown to you and fork out about a 1000 for the tyre, so now I'm looking for 6 x 17" wheels for the trips to come.

