I know there was a period in the late '80's when the Goodyear wranglers were going thru all sorts of problems. I bought mine ages ago on the tech spec with the kevlar and silica compound. I admit mine are now getting on, probably 8-10mm tread depth, but have flogged them at times and always got home. ast trip out of the caledonia valley i shredded quite a few lugs, so am now looking at replacing with BFG KM2, but the terrain/rocks did the damage, couple perhaps with my driving urgency. Sometimes you can be plain unlucky I reckon, like when I put a 2" rock right thru the centre on the tread on a Bridgestone desert dueller in the Flinders - 2500klm old - reckon I was dirty!