Basically title, this symbol is on the tires of my new (to me) CAAD12. Are the tires on backwards? The right side of the picture is the front of the bike, the left side is the rear. This is the front tire. Another picture below showing which way the tread is facing. The tread "looks" right, it appears it would channel water away from the center correctly.
you don't need those symbols. Looking at the pattern, which is supposed to push water towards the sides and away (like you wrote) it looks like they're mounted correctly. With a tire this thin, threads probably don't matter much (?)
what a confusing mark though! It should go on this community โ [email protected]