It’s time to buy new wiper blades when we see the following signs:
1.You can tell whether the wiper blade is good or bad by listening to the sound.
Rubber problem. Take a close look at your windshield wipers. …
There are streaks or film on the windshield.
It’s very noticeable when your wipers leave streaks on your windshield,
especially when you encounter snow or rain. … Chatter. … Curved frame. …
2. Pull up the wiper blade and touch the cleaned wiper blade with your fingers.
If the blade is aged, hardened, or cracked, the wiper blade is unqualified and needs to be replaced in time.
3. Set the wiper blade switch to each speed position and check whether the wiper blade maintains a certain speed at different speeds.