Windscreen Wiper Blades: What to Know Before You Buy

If the rain hits, the last thing you want is streaked glass. The right wiper blades keep your view clear and your car safe. In this guide we’ll break down how to pick the correct size, where to get the best price, and how to install them without a trip to the mechanic.

Choosing the Right Size

Most cars use either a 16‑inch or a 17‑inch blade on the driver’s side and a slightly shorter blade on the passenger side. A common question is, "Can I swap a 16‑inch blade for a 17‑inch one?" The answer is yes, but only if the larger blade fits the arm without rubbing the windshield. Measure the existing blade or check your owner’s manual for the exact length. When you buy, look for a kit that lists the size for each side – many brands sell a set that already matches the most popular combos.

Too long a blade can hit the car roof or the windshield frame, causing noise and wear. Too short a blade leaves a dry spot near the edge. If you’re unsure, bring the old blade to the store and ask a clerk to match it.

Where to Find the Best Deal

Wiper blades are cheap, but the price can vary a lot between retailers. A quick price check between AutoZone and Walmart in 2025 shows Walmart often runs a $5‑$7 discount on standard blades, while AutoZone might offer a free installation coupon. Keep an eye out for bulk packs – buying a 4‑blade set can save $3‑$5 per blade compared to single purchases.

Don’t forget to factor in the type of blade. Conventional rubber blades are cheap but wear fast. Silicone or beam‑style blades cost a bit more but last up to 20,000 miles and push water better on angled windscreens. Decide what matters most to you: upfront cost or longer life.

Once you have the right size, installation is a breeze. Most blades use a simple hook‑to‑pin system. Snap the new blade onto the arm, make sure it locks, and give it a gentle tug. If the blade feels loose, double‑check the latch direction – many blades have a “right‑hand” or “left‑hand” version.

Replacing a broken wiper is not just about visibility. In New Zealand, driving with non‑functional wipers can be illegal and unsafe, especially in heavy rain. If you notice streaks, squeaks, or a blade that won’t clear the glass, swap it out ASAP.

Regular maintenance keeps the blades working longer. Wipe each blade with a damp cloth after a wash, and check for cracks or torn edges every few months. A quick test – lift the blade off the glass and run your fingers along the rubber. If it feels rough, it’s time for a new set.

Bottom line: measure the correct size, compare prices at big retailers, pick a blade style that fits your budget, and replace them before they wear out. With the right windscreen wiper blades, you’ll stay safe and see clearly no matter the weather.