Honda Civic tire size depends on the trim, not on the word Civic. A current LX wears 215/55R16. Sport and Si wear 235/40R18. Type R is a different stamp again, and FK8 and FL5 do not share one. The table is the recent North American list. The door sticker is the one on your car.
Stock sizes by trim
11th-gen sedans and hatches (2022+) are the rows most people need. Sport and Si share a size even though they do not share an engine. Type R is listed by generation because Honda swapped the wheel when it redesigned the car.
| Trim / package | Stock size | Wheel (in) | Diameter (in) |
|---|---|---|---|
| Civic LX (11th gen) | 215/55R16 | 16 | 25.3″ |
| Civic Sport / Si (11th gen) | 235/40R18 | 18 | 25.4″ |
| Civic Type R, FK8 | 245/30R20 | 20 | 25.8″ |
| Civic Type R, FL5 | 265/30R19 | 19 | 25.3″ |
Why the sticker beats the chart
A Civic that has already been plus-sized will not match this table. Read the placard on the driver door, then the sidewall. If they disagree, the placard is what the speedometer was built around. Put that stamp in the calculator as the current size.
A Honda Civic can leave the factory on more than one size. Export markets, mid-year packages and previous-owner plus-sizes all disagree with a chart. Read the driver-door placard. Match width, aspect ratio and rim together.
Swapping to a different size
LX to Sport is almost a wash on overall diameter (about 25.3 vs 25.4 inches) and a big change in width and sidewall. That is plus-two in one factory step. If you want a different look on an LX, the Sport size is the one Honda already approved for the same well. Going past that is a clearance question the plus sizing page will not answer for you.
Type R is not a Civic Sport
FK8 (2017-2021) wears 245/30R20. FL5 (2023+) wears 265/30R19. Those are wider, much shorter-sidewall tires on a car that was designed around them. Do not put a Type R size on an LX and call it a plus-size. The fender, the offset and the load rating are not the same conversation.