Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/75-15 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.11 (688.5) | 30.98 (786.84) | 3.87 (98.34) 14.3% |
| Width inches (mm) | 8.07 (205) | 10.51 (267) | 2.44 (62) 30.2% |
| Circum. inches (mm) | 85.16 (2162.99) | 97.32 (2471.93) | 12.16 (308.94) 14.3% |
| Sidewall Height inches (mm) | 6.05 (153.75) | 7.99 (202.92) | 1.94 (49.17) 32% |
| Revolutions per mile (km) | 744.04 (462.32) | 651.05 (404.54) | -92.99 (-57.78) -12.5% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.86 mph (36.78 km/h) |
| 25 mph (40.23 km/h) | 28.57 mph (45.98 km/h) |
| 30 mph (48.28 km/h) | 34.28 mph (55.18 km/h) |
| 35 mph (56.33 km/h) | 40 mph (64.37 km/h) |
| 40 mph (64.37 km/h) | 45.71 mph (73.57 km/h) |
| 45 mph (72.42 km/h) | 51.43 mph (82.76 km/h) |
| 50 mph (80.47 km/h) | 57.14 mph (91.96 km/h) |
| 55 mph (88.51 km/h) | 62.86 mph (101.16 km/h) |
| 60 mph (96.56 km/h) | 68.57 mph (110.35 km/h) |
| 65 mph (104.61 km/h) | 74.28 mph (119.55 km/h) |
| 70 mph (112.65 km/h) | 80 mph (128.74 km/h) |
| 75 mph (120.7 km/h) | 85.71 mph (137.94 km/h) |
| 80 mph (128.75 km/h) | 91.43 mph (147.14 km/h) |
| 85 mph (136.79 km/h) | 97.14 mph (156.33 km/h) |
| 90 mph (144.84 km/h) | 102.85 mph (165.53 km/h) |
| 95 mph (152.89 km/h) | 108.57 mph (174.73 km/h) |
| 100 mph (160.93 km/h) | 114.28 mph (183.92 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1657 | 1925 | 2073 | 2164 | 2263 | 2334 | 2411 | 2503 | 2630 | 2757 | 2898 | 3010 | 3215 | 3440 | 3617 | 3730 | 3793 | 4026 | 4350 | 5055 |
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