3 signs you need to replace your wiper blades

Your wiper blades aren't the most visually appealing part of your car, but they play one of the biggest roles in keeping you safe. Wiper blades give you a clear line of sight to the road ahead by displacing the dirt and moisture that collects on your windshield.
Because of the crucial role they play in your safety, and the safety of your passengers, your wipers need to be functioning properly at all times. But just as with all auto components, they will gradually wear out with use and exposure to the elements.
How can you tell if your wiper blades need to be replaced?

Streaks
These are the most telltale sign of bad wipers. When the rubber contact surface of the blade no longer makes a sealed connection with the windshield, water can leak from under the blade, leaving streaks on your windshield that impair your road vision.

Noise
We've all heard the unpleasant squeak of a wiper blade on a windshield. This isn't normal? it's another sign that the blade's rubber contact surface is dulling and wearing out. Squeaking noises can also be a sign that your wipers are on too high of a setting for the amount of precipitation falling. Repeatedly scraping your blades across a dry windshield can wear them out faster.

Pulling away
At fast driving speeds, the air flow over your car can briefly pull wipers off the surface of the windshield, which you can identify by un-wiped spots within the blade's normal path, or by an audible slapping sound as the blade moves across the windshield. Often, this signals a structural problem with the blade, such as a tear in the rubber contact surface or a crack in the plastic support structure, or with the metal arm connecting it to the car (bent or warped).

You can prevent these problems and others by changing your wiper blades once or twice a year and alternating between summer blades and winter blades, which are designed to handle snow and ice.


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