About This Hub
Factory tire sizes for the Mazda3, CX-5, CX-30, CX-9 and MX-5 Miata, taken from Mazda U.S. owner's manuals, with calculated diameters. This hub links to the tools for comparing a new size with the Mazda factory size, plus a dedicated Miata Tire Guide.
Mazda Tire Tools & Information
Tire sizing tools and information for your Mazda (Mazda3, CX-5, Miata, etc.).
Key Tools for Mazda Owners
Whether you drive a Miata, CX-5 or Mazda3, this hub lists the factory tire sizes in Mazda's owner's manuals and links to the tools for comparing a new size.
Tire Size Comparator
Staggered Fitment Check
Wheel Clearance Estimator
Important Tips for Mazda Owners:
- Jinba Ittai (Rider and Horse as One): Mazda's philosophy emphasizes handling. Tire choice greatly impacts this. Consider performance-oriented all-seasons or summer tires to maintain the brand's intended feel.
- MX-5 Miata Owners: For the MX-5, see the dedicated Mazda MX-5 Miata Tire Guide for NB, NC and ND sizes.
- Check Your Placard: Mazda says to check the tire pressure label for tire size and inflation pressure. Mazda's temporary spare limits are quoted in the spare tire chart, and the tire pressure calculator converts pressure units.
Quick Mazda Tire Size Reference
Standard tire sizes from Mazda U.S. owner's manuals. Use these as the baseline for any size comparison.
| Model | Year | Stock Tire Size | OD |
|---|---|---|---|
| Mazda3 | 2019–2025 | 205/60R16 / 215/45R18 | 25.7" / 25.6" |
| CX-5 | 2017–2025 | 225/65R17 / 225/55R19 | 28.5" / 28.7" |
| CX-30 | 2020–2024 | 215/65R16 / 215/55R18 | 27.0" / 27.3" |
| CX-9 | 2020–2023 | 255/60R18 / 255/50R20 | 30.0" / 30.0" |
| MX-5 Miata (ND) | 2016–2026 | 195/50R16 / 205/45R17 | 23.7" / 24.3" |
OD = overall tire diameter (calculated). Sizes are from the Specifications section of each manual. Verify with the tire pressure label on your vehicle, because trims can differ.
Mazda Factory Size Comparisons
CX-5: 17 inch to 19 inch
Mazda's U.S. manuals list both P225/65R17 (28.52" OD) and P225/55R19 (28.74" OD). The difference is +0.8% (calculated), so the speedometer error is small. Mazda says to replace tires with the same type originally fitted.
Mazda3: 16 inch to 18 inch
The manuals list 205/60R16 (25.69" OD) and 215/45R18 (25.62" OD), a -0.3% difference (calculated). The 2.5T lists a higher front tire pressure (38 psi) than the other engines (36 psi).
MX-5 Miata: 16 inch to 17 inch
The manuals list 195/50R16 84V (23.68" OD) and 205/45R17 84W (24.26" OD), a +2.5% difference (calculated), both at 29 psi. Lug nut torque is 108 to 147 N·m (80 to 108 ft-lbf).
Disclaimer: All tools and information provided on TireCalculatorHub are for informational purposes only. Always consult with a qualified professional before making decisions about your vehicle's tires or modifications. TireCalculatorHub is not liable for any damages or issues arising from the use of information or tools on this website.