After a flat, soon after I installed these wheels, I needed to re-true the rear wheel. Apparently, after wrestling with the tire to get it mounted, I used a little too much force on the wheel. Anyway, long story short, I went to re-true the wheel and as I turned the nipple in a clockwise direction, (in relation to the spoke) just like every other wheel on this earth, it was only making it more out of true. I had it so far out at that point! That�s when I realized the threads were backwards. After that realization, I got it back to true, in short order. Just something to be aware of.