We just did Perth to Darwin via Marble Bar, Lichfield National Park via the southern access track, most tracks in Kakadu and then to Alice Springs via the Binns Track and back to Perth via the West MacDonalds and Great Central Road. I have D697's 285/60 R18 on my 3.0 D4 and apart from a trip to Esperance and city driving this is all they have done. We were towing a 1500 kg camper trailer for the Darwin trip.
My front tyres are fine, with no issues at all. However, the rears are chipped a bit and in particular the casing between the tread is cracked or cut by stones everywhere, with some large cuts. No issues at all with the side walls. One tyre fitter said the tread casing area is stuffed and I should claim them on warranty from Bridgestone. I think it is just damage due to sharp stones, but it certainly wasn't what I expected of the tyres. The actual tread hardly has any damage, apart from one or two chips.
I would say that my rear tyres are 50% worn after a bit over 12,000km. We were mosly doing 100 to 110 on bitumen and up to about 90 on gravel.
Bob

