ST Tires ???

ScottG wrote:
Another vote for GY Endurance. They've been around long enough for me and their record is excellent regarding blowouts and failures.
The only thing I don't like about them is they are subject to rock mining, where a sharp rock will burrow all the way down to the cords. Most tires wont do this but mine have several places where I can see the silver cords after removing rocks.

I have followed this and many other tire discussions and have a question about this comment and those by others. If the Endurance is so good (stellar) after only 3 years why is this rock mining occuring? As pointed out by Capri Racer the 3rd year of a tires' life is when problems may show up and now an issue has been identified. I don't know about others here but if I found a 3 year old tire with cords showing in the thread area due to rocks I would not want that tire on my equipment until the reason is found. IMO the jury is still out. And Scott, I am not picking on you, just using your words to highlight my thoughts.