ridgerunner said:I'd be willing to bet the treads you see on the highway are remnants of older processes that involve semi tires...
hold that bet, alot of the long treads pieces you see on the roadways can be new tires as well. separation of tread from carcass is brought on by heat i:e; the tire was run low for quite a while at those speeds. it happens alot on 18 wheelers for a couple reasons, when i tire goes low the other tire on the dual is taking that much more weight, w/o on board air management the driver doesnt know unless he happens to stop and check the tires before a blowout occurs. and the other reason is semis put just a couple more miles on the road than regular commuters so its just odds.