I've got the Cooper S/T 255/70*16. Not by my choice, they came with the vehicle. They've done about 65,000 so far. Look like they might go another 20-30,000km. I just put 2x new fronts on as previous owner didn't do a wheel alignment and 1x was feathered bad on the outer edge (although, we've done about 13,000km with it like that since we purchased the disco - doesn't appear to have worn much in that time ... with a wheel alignment too). Put the other old front on as a spare (and retired the never used Michelin XPC).
The Coopers have no signs of puncture repair. The sidewalls are holding up well (I air them down to 16-18psi regularly as we live at Stockton Beach, and run them 33/38 on the road), and there are no torn lugs on them. I've only done a small amount of rocky offroad with them ...
... although this sunday might see them get a real workout 
I'm not a tyre expert, but so far I'm pretty happy with them. Not to noisy on road, still agressive enough off-road for what we do, seem OK in the sand. Haven't given them a real mud workout yet, but I'd expect them to do OK.
fwiw
Kev..
Kev..
Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green
2014 MUX LST with fruit
2015 Kimberley Kamper "Classic"
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