It is hard to spot, Ralph, and that is how I overlooked it. The tires have a set of V notch tread cuts that are about twice as big as all of the other cuts. They go around the tire just like an inverted ag. bar tread would and in one direction only. After I eventually noticed these, I checked the sidewalls for a direction arrow. Sure enough, they do have an arrow to designate forward rotation. Looking at them is almost like one of those game puzzles where now you see it, now you don't. The best place to see the pattern is looking straight on the tread about 1/2 way up the back side. Then you may spot the V pattern of wide grooves. I posted this particular picture to post because once noticed, the pattern jumps right out at you.
CharlieV.