Do I need two different size windshield wipers?
When it comes to replacing your windshield wipers, you might notice that they are not always the same size. This is a common question among car owners, and understanding why this happens can help you make the right choice when purchasing replacements. At Kevin's Autos, we’ve seen this question come up frequently, so let’s dive into the details.
Why Are Windshield Wipers Different Sizes?
Most vehicles are designed with two windshield wipers of different lengths. This is not a mistake or a manufacturing error—it’s intentional. The reason lies in the design of your windshield and the need for maximum visibility. Here’s why:
- Windshield Shape: Windshields are often asymmetrical, meaning one side is larger or shaped differently than the other. To ensure the wipers cover as much of the glass as possible, manufacturers use different-sized wipers.
- Optimal Coverage: Using two identical wipers could leave parts of the windshield unwiped, reducing visibility during rain or snow. Different sizes ensure that both the driver and passenger sides are adequately cleared.
- Mechanics of the Wiper Arms: The wiper arms are designed to move in a specific pattern. Different lengths prevent the wipers from colliding with each other during operation.
How to Determine the Correct Wiper Sizes for Your Car
To find the correct sizes for your windshield wipers, you can follow these steps:
- Check Your Owner’s Manual: The manual will list the exact sizes for both the driver and passenger side wipers.
- Measure Your Current Wipers: If you don’t have the manual, you can measure the length of your existing wipers with a tape measure.
- Use an Online Tool: Many auto parts websites have tools where you can input your car’s make, model, and year to find the correct wiper sizes.
- Ask a Professional: If you’re unsure, visit a trusted auto repair shop like Kevin’s Autos, and we’ll help you find the right fit.
What Happens If You Use the Wrong Size?
Using the wrong size wiper blades can lead to several issues:
- Reduced Visibility: Wipers that are too short won’t clear enough of the windshield, while wipers that are too long may overlap or miss spots.
- Damage to the Wiper Mechanism: Oversized wipers can strain the wiper motor and arms, potentially causing damage over time.
- Increased Noise and Streaking: Incorrectly sized wipers may not sit properly on the windshield, leading to noise, streaks, or uneven cleaning.
Conclusion
Yes, you likely need two different size windshield wipers for your car, and this is by design to ensure optimal performance and visibility. Always check your car’s specifications or consult with a professional to ensure you’re using the correct sizes. At Kevin’s Autos, we’re here to help with all your car maintenance needs, including finding and installing the perfect windshield wipers for your vehicle. Stay safe on the road!
Frequently Asked Questions
Is one windshield wiper supposed to be bigger?
Blades on the driver's side extend longer than the passenger side to provide the best visibility for the person behind the steering wheel. Choosing a blade that's too short can leave large areas of your windshield unaffected, lowering your visibility.
What happens if you use the wrong size wiper blade?
If you're unsure about the size, it's better not to guess. Using the wrong size could result in inadequate windshield clearing, wiper malfunction, or even damage to your windshield.
Are windshield wipers supposed to be two different sizes?
The answer is it depends on the car but usually they are the same length. However, a better answer to your question is at most auto parts stores they have a catalog right next to the wiper blades where you can look up your car make and model and it will tell you exactly which part number wiper blades to choose.
What happens if you use the wrong size windshield wiper?
Using the wrong size wipers can lead to inadequate coverage, streaking, or even damage to your windshield.
Can I use a 16 inch wiper blade instead of 17?
The difference between 16" and 17" is again too small to create any issues. If the wipers are working smoothly without brushing with each other, there's no need to change. Here's what BHPian abhishek46 had to say on the matter: Nothing will happen to the glass.
Can you mix and match wiper blades?
Can I mix and match wiper blades? Yes. You can mix brands as long as they are compatible with your vehicle and match the required size.
Is it okay to just replace one windshield wiper?
It is recommended that wipers be replaced in pairs. If you drive an SUV, minivan or hatchback, be sure to keep an eye on the wiper blade on the rear window for signs that it needs replacing.
Do wiper blades need to be exact size?
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.
Do both windshield wipers need to be the same?
Though some vehicles have wipers that are the same length, most have subtle differences between the left and right side. This is evidenced through the fact that when buying new blades, most come with the driver and passenger side separately labeled.
What is the most common wiper blade size?
Standard ranges for both passenger and light commercial blades are from about 9'' (approximately 225mm) to 28'' (approximately 700mm) long. They come in both front and rear varieties. To check the size of your blades: Lift the blades away from the windshield and straighten them (if they're curved).
