Originally Posted by
datlas
I suppose it depends on road conditions, but I also wonder if sometimes there are "good" batches and "bad" batches of these tires? Or maybe two different factories, one that does a better job than the other.
I don't know if there are differences in durability across the molding machines but we do know that for the 4000S there were differences in rolling resistance: one of them produced lower RR than the others. I think there were eight (??) molds in total.