Also asked, do you need two different size wiper blades?
In order to achieve the maximum space cleared, wiper blades are typically two different sizes depending on exactly where the wiper pivots are positioned. If you replace your wiper blades, make sure to use the same size as indicated by your car manufacturer to get the best viewing area for the driver.
Furthermore, what happens if you use the wrong size wiper blade? Incorrectly wiper adapter installation can cause the blade to fall off during driving. Also, a loose connection can cause faulty performance. If you install the wrong wiper blade size on your vehicle, you may experience chattering, skipping, or gapping in areas.
Beside above, how do I know what size windshield wipers I need?
Check Your Manual: Your vehicle's manual should tell you what size wiper blades you need for each side and could even recommend a brand. Some vehicles have different size requirements for the driver and passenger sides, so read carefully before replacing the blades.
Can you use different size wiper blades?
Size matters to a point, just as long as you are about 1 inch higher or lower than your current wiper blade size. If you buy wiper blades that are too big, they might overlap or touch which will cause them to break. For example, Bosch does not make 17″ wiper blades so buying a 16″ or 18″ blade is absolutely fine.