The 2018 Honda Accord does not have a single fixed tire size; size depends on trim and wheel package.
To confirm the exact OE size for your car, you must check the door jamb placard, the tire sidewall, or the original window sticker. The size can vary by trim and wheel combination, and may involve 17-, 18-, or 19-inch wheels depending on how the car was equipped when new.
How to determine your exact OE tire size
The following steps will guide you to the precise tire size that came from the factory on your Accord.
- Check the driver's door jamb placard for the "Tire Size" entry, which lists the recommended size for the front and rear tires.
- Inspect the sidewall of one of the tires for a size code like P235/45R18; this is the tire size currently installed on the car.
- Consult the VIN-specific build sheet or the original window sticker (often available from Honda or certain online services) to confirm the factory size for your exact trim and wheel package.
- If you’ve replaced wheels, verify the diameter of the wheels currently installed and ensure the tires match the OEM size for that diameter, or consult your dealer for alternatives within spec.
- When in doubt, contact a Honda dealer or a qualified service center with your trim and wheel information to confirm the correct OE tire size.
Concluding: By checking the door placard and the tire sidewall, you can confirm the exact factory tire size for your 2018 Accord, which will vary by trim and wheel configuration.
Summary: There isn’t a universal tire size for all 2018 Honda Accord models. The precise size depends on trim and wheel package. Always verify the official OE size on the door placard or the tire sidewall, or consult a dealer with your trim and VIN for confirmation.