Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 250/70-15 | 31/10-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.78 (731) | 31 (787.4) | 2.22 (56.4) 7.7% |
| Width inches (mm) | 9.84 (250) | 10 (254) | 0.16 (4) 1.6% |
| Circum. inches (mm) | 90.41 (2296.5) | 97.39 (2473.69) | 6.98 (177.19) 7.7% |
| Sidewall Height inches (mm) | 6.89 (175) | 8 (203.2) | 1.11 (28.2) 16.1% |
| Revolutions per mile (km) | 700.78 (435.44) | 650.58 (404.25) | -50.2 (-31.19) -7.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.54 mph (34.67 km/h) |
| 25 mph (40.23 km/h) | 26.93 mph (43.34 km/h) |
| 30 mph (48.28 km/h) | 32.31 mph (52.01 km/h) |
| 35 mph (56.33 km/h) | 37.7 mph (60.67 km/h) |
| 40 mph (64.37 km/h) | 43.09 mph (69.34 km/h) |
| 45 mph (72.42 km/h) | 48.47 mph (78.01 km/h) |
| 50 mph (80.47 km/h) | 53.86 mph (86.68 km/h) |
| 55 mph (88.51 km/h) | 59.24 mph (95.34 km/h) |
| 60 mph (96.56 km/h) | 64.63 mph (104.01 km/h) |
| 65 mph (104.61 km/h) | 70.02 mph (112.68 km/h) |
| 70 mph (112.65 km/h) | 75.4 mph (121.35 km/h) |
| 75 mph (120.7 km/h) | 80.79 mph (130.01 km/h) |
| 80 mph (128.75 km/h) | 86.17 mph (138.68 km/h) |
| 85 mph (136.79 km/h) | 91.56 mph (147.35 km/h) |
| 90 mph (144.84 km/h) | 96.94 mph (156.02 km/h) |
| 95 mph (152.89 km/h) | 102.33 mph (164.68 km/h) |
| 100 mph (160.93 km/h) | 107.72 mph (173.35 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1656 | 1923 | 2071 | 2163 | 2261 | 2332 | 2409 | 2501 | 2628 | 2755 | 2896 | 3008 | 3213 | 3438 | 3614 | 3727 | 3790 | 4023 | 4347 | 5051 |
Better Fuel Economy Factory Ratios Increased Power
