Those numbers on your tire sidewall look like a secret code. They are not. Here is what every number means in plain English.
Example: 275/70R17
- 275 = tire width in millimeters (10.8 inches)
- 70 = aspect ratio (sidewall height is 70 percent of the width)
- R = radial construction (all modern tires)
- 17 = wheel diameter in inches
Common Truck Tire Sizes Translated
| Metric Size | Approximate Inches | Common Name |
|---|---|---|
| 265/70R17 | 31.6" | Stock truck size |
| 275/70R17 | 32.2" | Slight upgrade |
| 285/70R17 | 32.7" | 33s |
| 315/70R17 | 34.4" | 35s |
| 37x12.50R17 | 37" | 37s (flotation size) |
Not sure what size you need? Call (913) 291-2027 and we will look up your vehicle.