The correct size for the rear wiper blade on the 2017 BMW X3 is 12 inches (300 mm).
In the 2011–2017 X3 lineup (the F25 generation), the rear window is cleaned by a single 12-inch blade. Using the proper length ensures full coverage and effective wiping, especially in winter conditions. If your vehicle has a regional variant or option that differs, verify with the owner’s manual or a BMW dealer.
How to confirm the size
If you're not completely sure of the blade length, here are steps to verify before replacement.
Key checks before buying
- Measure the current blade from tip to tip with a tape measure to confirm length.
- Check your vehicle’s owner manual or the BMW parts catalog for the exact rear blade size for your model year and region.
- Examine the existing blade’s connector type (the way it attaches to the wiper arm) to ensure you purchase a compatible replacement.
- When in doubt, order a 12-inch rear wiper blade specified for 2011–2017 X3 models to match the original length.
Verifying the size helps avoid ordering the wrong blade and ensures proper wipe coverage across the rear window.
Where to buy and how to replace
Rear wiper blades of the correct length are widely available at auto parts stores and online retailers. Look for a 12-inch blade compatible with the X3’s rear wiper arm, and consider brands with good winter-grade coatings for durability in cold weather. The replacement process is straightforward (below), but if you prefer professional help, a quick visit to a dealer or auto shop can ensure a perfect fit.
- Park the car on a level surface, engage the parking brake, and gently lift the rear wiper arm away from the window.
- Release the old blade by pressing the release tab or sliding the connector, depending on the blade design.
- Attach the new 12-inch blade by sliding it into the wiper arm’s connector until it clicks and is secure.
- Lower the arm back onto the window and test the wipe to confirm full coverage and no contact with the glass.
Proper installation ensures the wiper blade seats correctly and lasts through season changes. If you notice streaks or skipping after installation, re-check alignment or consider a winter-grade blade designed for colder conditions.
Summary
For a 2017 BMW X3, use a 12-inch rear wiper blade (approximately 300 mm) to ensure full coverage of the rear window. Confirm the exact connector type if you’re purchasing an aftermarket blade, and follow the simple steps to replace. When in doubt, consult the owner’s manual or an authorized dealer to confirm compatibility for your specific regional spec.