Mazda CX-5 tire size is two stamps on the current car. 2.5 S and Select wear 225/65R17. Premium, Premium Plus and Turbo wear 225/55R19. Mazda skipped the 18-inch middle step that Toyota and Honda kept. Width stays 225. The 19 is a plus-two with diameter held close.
Stock sizes by trim
Second-gen CX-5 (2017+) is this pair for most US trims. Some early years and some markets used 225/60R18. If the sticker says 18, this table is missing your row on purpose. Believe the sticker.
| Trim / package | Stock size | Wheel (in) | Diameter (in) |
|---|---|---|---|
| CX-5 2.5 S / Select | 225/65R17 | 17 | 28.5″ |
| CX-5 Premium / Turbo | 225/55R19 | 19 | 28.7″ |
Why the sticker beats the chart
Turbo does not get a wider tire from the factory. It gets the 19-inch wheel. People assume turbo means 235 or 245. The stamp is still 225. Do not "upgrade" width because the engine is stronger.
A Mazda CX-5 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
225/65R17 is about 28.5 inches. 225/55R19 is about 28.7. That is a clean plus-two. If you want Premium wheels on a Select, diameter is not the fight. Offset and the harsher ride are. The plus sizing page is that trade.
No 18-inch factory step
Aftermarket 18s in 225/60R18 sit between these two and are a common winter-wheel size. That stamp is about 28.6 inches, so it belongs in this conversation even though Mazda does not currently sell it on the US CX-5. Compare it before you buy a takeoff set.