The front-wiper blades are typically 24 inches on the driver’s side and 19 inches on the passenger’s side; if your Optima has a rear wiper, it usually uses a 12-inch blade.
For context, the 2010 Kia Optima spans a generation where blade lengths followed common mid-size sedan standards. Sizes can vary slightly by trim or regional production, so it’s prudent to confirm against your specific vehicle or the owner’s manual. The following details outline the most widely used measurements and how to verify them before purchasing replacements.
Front wiper sizes
The standard front blades for the 2010 Optima are listed below to help you shop for replacements.
- Driver's-side blade: 24 inches
- Passenger-side blade: 19 inches
Using 24-inch and 19-inch blades ensures full windshield coverage without overlap or gaps. If your vehicle seems to use a different length on the front, double-check by measuring the current blades or consulting the manual, as rare production variations can occur.
Rear wiper size (if applicable)
Not every 2010 Optima model includes a rear wiper; if yours does, the rear blade is commonly 12 inches.
- Rear blade: 12 inches
As with the front blades, confirm the rear size by inspecting the current blade or the vehicle’s documentation, since some regional trims or aftermarket setups may differ.
How to verify your blade size
To ensure you get the correct replacement, follow these steps:
- Check the vehicle’s owner’s manual or the current blade packaging for the listed size.
- If replacing an old blade, remove it and measure its length from tip to tip.
- Compare your measurement with common sizes (e.g., 24", 19", 18", 12") and choose a matching blade.
- When in doubt, bring a photo or the old blade to an auto parts store; staff can help confirm compatibility.
Accurate sizing helps ensure proper contact with the windshield, reduces streaking, and maintains visibility in adverse weather.
Summary
For a 2010 Kia Optima, the typical front wiper setup is 24 inches on the driver’s side and 19 inches on the passenger side, with a 12-inch blade for a rear wiper if your model has one. Always verify against your specific vehicle’s manual or current blades, as regional trims or production variations can occur. When in doubt, consult with an auto parts professional to confirm exact fit.


