Why Do Windshield Wipers Always Leave Streaks?

2 Answers
Nigel
07/28/25 4:07pm
Windshield wipers may leave streaks because the middle or tip of the wiper has lifted and cannot make full contact with the glass. First, wet the glass with water and run your hand back and forth across it. If there is dust on the glass surface, try wiping it several times with warm water, then gently rub it with your hand. Alternatively, you can use newspaper, rinse with water, and then feel the glass with your hand. Another option is to lightly sand the wiper blade or purchase a glass rain repellent. After prolonged exposure to wind and sun, windshield wipers will eventually wear out and cannot be repaired. At this point, the only way to achieve a clean wipe is to replace them with new ones. The position and angle of the wipers are crucial; any misalignment can cause shaking issues, naturally preventing a clean wipe. If this is the case, simply adjusting the wiper's position will solve the problem.
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VonEverett
08/11/25 11:10pm
The wiper blades aren't cleaning properly, which is a frequent issue I encounter and quite annoying. The main reason is the aging of wiper blades where the rubber hardens, leading to cracks over time and ineffective rainwater removal. Additionally, there might be oil film or dirt residue on the windshield, especially after driving in the rain, which can accumulate dust and grease, affecting the wiping performance. I recommend first checking the condition of the wiper blades and cleaning them with a wet cloth or glass cleaner to see if it improves. If not, it could be due to insufficient tension in the wiper arm or improper installation, requiring adjustment or replacement. Parking in the shade to avoid direct sunlight can help reduce rubber aging. Wiper blades typically last six months to a year, and regular maintenance can save money and ensure safety. Poor visibility while driving is dangerous, so don't delay—address it promptly. For a simple fix, you can DIY by replacing the blades yourself; try buying affordable ones online.
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