The Safety of Using Front Windscreen Wipers on the Rear Windscreen: Potential Damages and Better Practices

When it comes to maintaining your car's visibility, proper use of windscreen wipers is crucial. However, a common question that arises is whether front windscreen wipers can be used on the rear windscreen instead. This analysis will explore this issue, discussing the potential dangers and the best practices for ensuring the safety and longevity of your vehicle.

Understanding Windscreen Wiper Blades

Windscreen wiper blades, whether front or rear, serve the same basic purpose: to clear water from the windscreen. Although the blades themselves may appear similar, there are subtle differences in design, especially regarding length, pivot point, and attachment points. These differences are crucial for proper operation on either the front or rear windscreen. Different makers offer blades that are tailored to specific car models, accounting for the manufacturer's unique screen depth and wiper arm dimensions.

Are Front Windscreen Wipers Suitable for the Rear Windscreen?

The short answer is no, it is not generally advisable to use front wiper blades on the rear wiper arms. Several potential issues can arise from this practice:

Ineffective Blade Clearing: Front wiper blades are usually longer, designed to cover a larger area. Using these on the rear windscreen might not provide sufficient surface coverage, potentially leading to a streaky or insufficient wipe. Mechanical Issues: The rear wiper motor may be smaller than the front motor. Over-sized blades can put undue stress on the rear wiper motor, potentially leading to fatigue or motor failure. Damage to Paintwork: The rear blade might strike or rub against the bodywork surrounding the rear screen, leading to paintwork damage. Such damage not only affects aesthetics but can also lead to corrosion over time.

Therefore, to avoid these potential hazards, it is best to use specially designed rear wiper blades. These are engineered to fit the specific dimensions and requirements of the rear windscreen, ensuring optimal performance and minimal strain on the wiper motor.

Best Practices and Tips for Windscreen Wipers

Check Your Owner’s Manual: The manual will provide accurate dimensions and recommendations for the wiper blades. Always refer to it before making a purchase. Replace Blades Regularly: Over time, wiper blades degrade due to exposure to ultraviolet rays and environmental elements. Regular replacement will ensure your car remains safe and clear. Inspect for Proper Fit: Before fitting any new blades, ensure they are the correct size and shape for your rear screen. An undersized blade, as experienced by the author, can still provide a significant improvement if it is close to the correct size.

Conclusion

In summary, while front windscreen wipers are effective for their intended purpose, they are not suitable for use on the rear windscreen. Using rear wiper blades designed for this specific application is essential to prevent potential damage, mechanical issues, and ensure clear visibility while driving. By following these best practices, drivers can help maintain the safety and longevity of their vehicles.

Frequently Asked Questions

Can I use front wiper blades on the rear screen if the blade length is comparable?

While the blade length might appear comparable, other factors such as the pivot point, attachment points, and overall design make these blades unsuitable for the rear screen. The ideal solution is to use blades specifically designed for the rear windscreen.

Are there any safety implications of using front wiper blades on the rear screen?

Yes, there are several safety concerns. Front wiper blades can be too long and heavy for the rear wiper motor, leading to potential motor failure. Additionally, there is a risk of damage to the paintwork and surrounding bodywork.

What should I do if I need to replace the rear wiper blades and cannot find the exact brand?

It is best to find blades that are as close in size as possible to the original. You can also consider general-purpose blades that are designed for the rear screen of the same model year. Always consult the owner's manual for the most accurate size information.