Don't know about you, but my OEM tires been running fine. I've put put to 80 miles on my hon now (of which I should have changed it 20,000 miles ago), and the tires are still not weared out...the treads are still half the size of the original, and there are no bald spot anywhere. I'll have my tires changed soon...but this is one of the longest set of tires I've used in all my life.
"Life is a river that runs through time. Without water, the river is empty, and its usefulness has no meaning except to the forgotten time..." - Lao Tsu, Reverence Scroll of Shaolin.