Originally Posted by semtex

Guys, I'm going go out on a limb here and say that it's a misprint in the SM. Because check out this picture of the Bridgestone S-02: SuperView of the Bridgestone Potenza S-02

It's a little tough to see, but if you look at the back of the tire in the shot (at 3 o'clock), you can see a little arrow with the word "Rotation". That's how you know it's unidirectional. And our RE050A's don't have this indicator.