When i start driving and hit roughly 55 the whippers jitter and leave all sorts of water. So new whippers or what? its only when i hit 55. i could be crusin at 50 and they are fine.

 

Are your wipers winter blades? By winter blades I mean the ones with the rubber on the frame of the wiper. But you prob just need a better designed blade. Rain-x blades have never given me a problem and seem to perform good on the highway. Otherwise I would use some bosh icons. They are by far the best blades on the market. But they cost 20 a pop so its your choice.