My Conti's last about 100 miles off-road and 15K onroad and there were chunks missing from the treads. Of course my wheel height was all over the place by well 1-3" after I measured everything in tight tolerance, and yes this was a vehicle that was alway taken to Land Rover, Beverly Hills in this case, so Gucci of Gucci. But back to the main discussion, the tires didn't last that long with me partially because of the terrible alignment/wheel height and the beating I was giving them on the trail (socal, lots of sharp rocks and very abrasive sand)
ATIII's solid as a rock so far.
One thing I will say about he Conti's or maybe just the LR4 is that the guys in Land Cruisers, Jeeps and Taco's were amazed at the fact that I could follow them pretty much everywhere without putting a foot wrong I was the Beetle in the Okavango. Yes I was obsessed with protecting my side walls on the fully inflated Conti's whilst they were all aired down, but I still made it.
Long rant short, they're a good enough tire, or the vehicle is pretty good or any combination of the two, but you'll be surprised where they can take you just be careful of the side walls and take tire plugs for any punctures.
