Metric Tire Size Calculator: Convert Metric Tires to Inches
Wondering how to convert a metric tire size (like 295/75R17) into inches for diameter, width, and wheel fitment? This Metric Tire Size Calculator instantly converts any metric tire size into its exact dimensions in inches, including overall tire diameter and section width. Use it to check fitment, plan upgrades, or compare tires for your Ford Ranger, off-road truck, or SUV.
This tool also includes a full list of common metric tire sizes with their corresponding width and diameter in inches, so you can quickly reference popular tire options without manual calculations.
Common Metric Tire Sizes
| Tire Size | Section Width (Tread Width) | Tire Height (Diameter) |
| 15-Inch | ||
| 205/70R15 | 8″ | 26.3″ |
| 215/75R15 | 8.46″ | 27.7″ |
| 235/75R15 | 9.25″ | 28.9″ |
| 255/70R15 | 10″ | 29.1″ |
| 265/70R15 | 10.4″ | 29.6″ |
| 16-Inch | ||
| 225/75R16 | 8.8″ | 29.3″ |
| 235/85R16 | 9.25″ | 31.7″ |
| 245/75R16 | 9.6″ | 30.5″ |
| 265/70R16 | 10.4″ | 30.6″ |
| 265/75R16 | 10.4″ | 31.6″ |
| 285/75R16 | 11.2″ | 32.8″ |
| 305/70R16 | 12″ | 32.8″ |
| 315/75R16 | 12.4″ | 34.6″ |
| 345/75R16 | 13.6″ | 36.4″ |
| 17-Inch | ||
| 235/65R17 | 9.25″ | 29″ |
| 245/70R17 | 9.6″ | 30.5″ |
| 255/75R17 | 10″ | 32″ |
| 255/80R17 | 10″ | 33″ |
| 265/70R17 | 10.4″ | 31.6″ |
| 275/70R17 | 10.8″ | 32.2″ |
| 285/70R17 | 11.2″ | 32.7″ |
| 295/70R17 | 11.61″ | 33.26″ |
| 285/75R17 | 11.2″ | 33.8″ |
| 305/65R17 | 12″ | 32.6″ |
| 315/70R17 | 12.4″ | 34.4″ |
| 335/35R17 | 13.2″ | 26.25″ |
| 18-Inch | ||
| 265/60R18 | 10.4″ | 30.5″ |
| 275/65R18 | 10.8″ | 32.1″ |
| 275/70R18 | 10.8″ | 33.2″ |
| 285/75R18 | 11.2″ | 34.8″ |
| 295/65R18 | 12.6″ | 33.1″ |
| 305/60R18 | 12″ | 32.4″ |
| 305/70R18 | 12″ | 34.8″ |
| 20-Inch | ||
| 275/60R20 | 10.8″ | 33″ |
| 275/65R20 | 10.8″ | 34″ |
| 285/60R20 | 11.2″ | 33.4″ |
| 285/65R20 | 11.2″ | 34.5″ |
| 295/55R20 | 12.6″ | 32.8″ |
| 295/60R20 | 11.6″ | 33.9″ |
| 305/55R20 | 12″ | 33.2″ |
| 325/60R20 | 12.8″ | 35.3″ |
| 345/30R20 | 13.6″ | 28.2″ |
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About The Author
Jim Oaks is the founder of TheRangerStation.com, the longest-running Ford Ranger resource online since 1999. With over 25 years of hands-on experience building and modifying Ford Rangers — including magazine-featured builds like Project Transformer — Jim has become one of the most trusted authorities in the Ford Ranger off-road and enthusiast space.
Since launching TheRangerStation.com, Jim has documented thousands of real-world Ranger builds, technical repairs, drivetrain swaps, suspension modifications, and off-road adventures contributed by owners worldwide. TheRangerStation.com has been referenced in print, video and online by enthusiasts, mechanics, and off-road builders looking for practical, and experience-based information.