Turn ON your wipers then turn off your BMW 330i when the wipers are at their mid-way point on your windshield
With your wipers stopped midway on your windshield it should be easy to lift your wipers up and away from your windshield.
Your old wipers should stick out, away, from your windshield. Now allowing for easy access during the rest of the changing process.
Be sure to take note of which new blade length goes on which side.
Measure or just compare old blade length to the new Trico® wiper blades.
Then place the new blades on the correct side.
Your 2020 BMW 330i has a pinch tab attachment for the windshield wipers. Press the tab or button. Then tilt or slide it off the old wiper.
Different wiper manufacturers use different style attachments for the pinch tab.
With this arm type it is necessary to remove the preattached adaptor on the wiper blade and replace it as follows with adapter (BC)
1. Push the small adapter lever toward the center of the blade.
2. While doing step 1, lift the factory installed adaptor off of the blade and discard it.
3. Find adaptor (BC) and press it on to the center of the blade. The two nubs inside of the adaptor onto the area on the blade marked "X".
4. Press the tab on the front of adaptor (B).
5. Lift shim (C) off of adaptor (B) and discard it. Tip: Press down on top edge of adaptor B to remove shim (C) easier.
6. Hold your thumb firmly on the front of the adaptor, raising the back end up.
7. Align the side arm tabs with the side tabs on the back end of the adaptor, and raise the blade into the underside of the arm.
8. Rotate the blade up until the tip of the arm locks underneath the adaptor tab.
9. The adaptor must lock on to the arm where indicated.
Double check that wiper blades and adapters are locked on to the wiper arms.
Remove any wiper blade plastic covers.
Carefully lower your new wipers down to your windshield. Discard old wipers and packaging material.