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* Try different glass coatings as mentioned above, or none at all. * Experiment with different blades like the OP has done.

Either way you've confirmed your problem. Also, sometimes they flop fine when the glass is dry so don't be fooled if you're doing this experiment without wetting the glass. did it flop over when it changed direction? You gotta watch closely and quickly! Maybe it didn't flop over and now it chatters in the other direction, or clears better in the other direction. Just as an experiment, try manually flopping the blade with your fingers when the wiper is stationary, then turn on your wipers and watch. Next time it rains, pay attention to see if the wiper clears better in one direction than the other. Here's how you can tell if your blades aren't flopping. However sometimes a non-flopping blade still functions ok and doesn't chatter. In other words, you've made the glass so slick so that there isn't enough friction to cause the wiper edge to flop over. can make this non-flopping problem worse because you've changed the friction coefficient between the glass and the rubber. If it doesn't flop, then the wiper edge is "shaving" along the glass surface which often creates uneven friction/tension so it chatters and skips along surface.Īpplying a coating like Opti-Glass/Rain-X/AquaPel etc. A wiper is supposed to drag along the glass surface, then flop over and drag along on it's way back.