Quote Originally Posted by Melalvai View Post
My armadillo tires came with arrows. I thought the idea was the kevlar is in overlapping scales, so one way would allow nails and such in easily, and the other would keep them out. I could be completely wrong though.
I cannot imagine a company going to the trouble to make the Kevlar belt in "scales." At least, not and sell the tire for a reasonable amount of money. It's far simpler to lay down a belt over the tire cords just before applying the tread compounds.

Yep, tread designs (at least on road bike tires) are mostly marketing tools, there to give you a visual difference between two tires that otherwise behave much alike.

And Select K tires are good ones, especially for the money (<$30).