The tire size for a 2021 Honda Accord varies by trim and wheel package; there isn’t a single universal size.
For U.S.-market models, the most common factory configurations span 17-, 18-, and 19-inch wheels, with 235 mm width and different aspect ratios depending on the trim. To be certain of your exact size, check the tire sidewall or the tire‑information placard on the door jamb.
Trim-by-trim tire sizes
The following breakdown reflects typical OEM tire sizes associated with common 2021 Accord trims and wheel setups. If your car has aftermarket wheels or a different regional package, sizes may vary.
- LX: 235/45R17 tires on 17-inch alloy wheels
- EX and EX-L: 235/45R18 tires on 18-inch alloy wheels
- Sport: 235/40R19 tires on 19-inch alloy wheels
- Touring: 235/40R19 tires on 19-inch alloy wheels
In practice, the tire width is typically 235 mm across these trims, with the aspect ratio and wheel diameter changing by model grade. Always verify with the door placard or the owner's manual to confirm the exact specification for your vehicle.
Notes for replacement tires
When replacing tires, use the OEM size listed for your trim to maintain handling, speedometer accuracy, and ride quality. If you’re considering a different size for a seasonal or performance purpose, consult a qualified tire technician to evaluate clearance, load ratings, and any potential impacts on warranty or vehicle sensors.
Summary
For the 2021 Honda Accord, there isn’t a single tire size. The most common configurations in the U.S. market are: LX with 235/45R17, EX/EX-L with 235/45R18, and Sport/Touring with 235/40R19. Always confirm the exact size on the door jamb placard or in the owner’s manual, especially if your car has optional wheels or regional variations.