I cheated and followed the image links, but I won't take credit for knowing. What I am curious about is why do the directional tires on the front seem to be put on backwards--especially when the rear tires appear to be put on in the "right" direction? I could see that you would get a little more "bite" that way, but there's no way for the tire to self-clean. Curiously, this attribute is repeated in all of the pictures. Any thoughts?