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25 April 2025 (updated) What Size Wiper Blades for My Car: Choosing the Right Windscreen Wiper Blades
Handy buyer’s guide to selecting the right size of wiper blades for your car. Learn where to find the sizes and how to measure the wipers yourself.
Wiper blade sizes
Wiper blades are available in sizes ranging from 9 inches to 32 inches or 230mm to 813mm. The size of wiper blades is crucial because a proper fit ensures they cover the glass evenly without leaving gaps. Components that are too short won’t clear the full windscreen, whereas if they're too long, they may overlap or hit the edges, causing damage.
You can find the correct size in your vehicle owner’s manual or by using an online compatibility tool. Most vehicles use two different lengths for the driver and passenger sides, and some also include a rear wiper.
Why does the wiper blade size matter?
Wiper blade sizes are crucial as they range from about 9 inches to 32 inches and different vehicles require specific sizes for optimal performance. Choosing the correct wiper blade size ensures maximum coverage of the windscreen, thus providing better visibility during adverse weather conditions.
Using the incorrect ones, on the other hand, can cause streaks or smudges, impairing the driver's view and compromising safety. To make sure your wiper blades are compatible with your car, check the manual for measurements or the OE part number.
While universal wiper blades are designed to fit a wide range of vehicles, they still come in various lengths and must match your car’s specifications. Always check your vehicle’s recommended blade size, even when opting for universal options, to maintain safe driving conditions.
How to find the right wiper blade size
To find the right wiper blade size, check your vehicle’s owner’s manual, which lists the correct lengths for each wiper. Alternatively, use a vehicle registration or part selection tool offered by auto parts retailers; simply enter the make, vehicle model, and year of manufacture.
You can also measure your existing blades or ask at a local garage. Keep in mind that the driver and passenger sides often require wiper arms of different lengths, and some vehicles have a rear wiper blade that may need a different size.
BOSCH Rear wiper blade
330 mm, Flat wiper blade
Article number: 3 397 016 507
£ 8,73
price incl. 20% VAT, excl. delivery costs
BOSCH Rear wiper blade
380 mm, Flat wiper blade
Article number: 3 397 016 508
£ 10,44
price incl. 20% VAT, excl. delivery costs
BOSCH Wiper blade
650, 400 mm Front, Beam
Article number: 3 397 118 911
£ 23,17
price incl. 20% VAT, excl. delivery costs
BOSCH Wiper blade
700, 450 mm, Flat wiper blade
Article number: 3 397 014 027
£ 20,42
price incl. 20% VAT, excl. delivery costs
BOSCH Rear wiper blade
240 mm, Flat wiper blade
Article number: 3 397 016 512
£ 8,33
price incl. 20% VAT, excl. delivery costs
How to measure wiper blades?
To measure your current windscreen wipers, start by lifting the wiper arm away from the windscreen. Carefully remove the blade and lay it flat. Using a tape measure, check the length from one end to the other, measuring in inches or millimetres. Repeat the process for both the driver and passenger side blades, as they often differ in size. If your car has a rear wiper, measure that as well.
Compare your results with the vehicle handbook to ensure accuracy. A conversion chart can help you understand the equivalent sizes when wiper blades are marked in different units, such as inches to millimetres. The most common sizes for standard blades range between 16 and 26 inches (approximately 400 to 650 mm).
Why do you need to replace your windscreen wipers?
Timely replacements are essential for maintaining clear visibility in rain, snow, or offroad conditions. Over time, blades wear out, leaving streaks or making noise. Installing replacement windscreen wiper blades restores optimal performance and keeps you safe on the road.
Regular replacement also prevents damage to the windscreen caused by worn rubber. Many garages offer a fitting service, but doing it yourself can help reduce wiper replacement costs. Check your blades regularly and replace them at the first signs of wear.
How often should I replace my wiper blades?
Manufacturers typically recommend replacing the rubber blades once every 6 to 12 months. However, this will depend on factors such as usage and weather conditions. If you notice they are streaking, skipping, or squeaking, it’s time for a replacement. Regular checks help ensure clear visibility and prevent potential windscreen damage.
FAQ
Are all wiper blades universal?
No, not all wiper blades are universal. Sizes and fitting types vary depending on the vehicle make and model. What are some tips or tricks for buying and replacing my car wiper blades on my own? Consult your vehicle manual or online tools, check sizes carefully, and follow installation instructions or video tutorials for easy installation.
Are the left and right windscreen wipers the same on a car?
Not always – many cars use different lengths for each side, so check both blade sizes before buying replacements.
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