A youtube video said they were directional as I still have my borrowed friend's bike, I took a look and there is definitely an arrow. My eyesight isn't great but it's tough to read the black text on the black sidewall but as mentioned, I'm not spotting it on my 700x32s.. It's not really raised that much or has features that distinguish it from the background.
Originally Posted by
Steve B.
I dont think they have ever been directional, or at least I've never paid attention