Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/75-16 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.33 (668.9) | 30.98 (786.84) | 4.64 (117.94) 17.6% |
| Width inches (mm) | 6.89 (175) | 10.51 (267) | 3.62 (92) 52.6% |
| Circum. inches (mm) | 82.73 (2101.41) | 97.32 (2471.93) | 14.59 (370.52) 17.6% |
| Sidewall Height inches (mm) | 5.17 (131.25) | 7.99 (202.92) | 2.82 (71.67) 54.6% |
| Revolutions per mile (km) | 765.84 (475.87) | 651.05 (404.54) | -114.79 (-71.33) -15% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.53 mph (37.86 km/h) |
| 25 mph (40.23 km/h) | 29.41 mph (47.33 km/h) |
| 30 mph (48.28 km/h) | 35.29 mph (56.79 km/h) |
| 35 mph (56.33 km/h) | 41.17 mph (66.26 km/h) |
| 40 mph (64.37 km/h) | 47.05 mph (75.72 km/h) |
| 45 mph (72.42 km/h) | 52.93 mph (85.19 km/h) |
| 50 mph (80.47 km/h) | 58.82 mph (94.66 km/h) |
| 55 mph (88.51 km/h) | 64.7 mph (104.12 km/h) |
| 60 mph (96.56 km/h) | 70.58 mph (113.59 km/h) |
| 65 mph (104.61 km/h) | 76.46 mph (123.05 km/h) |
| 70 mph (112.65 km/h) | 82.34 mph (132.52 km/h) |
| 75 mph (120.7 km/h) | 88.22 mph (141.98 km/h) |
| 80 mph (128.75 km/h) | 94.11 mph (151.45 km/h) |
| 85 mph (136.79 km/h) | 99.99 mph (160.91 km/h) |
| 90 mph (144.84 km/h) | 105.87 mph (170.38 km/h) |
| 95 mph (152.89 km/h) | 111.75 mph (179.85 km/h) |
| 100 mph (160.93 km/h) | 117.63 mph (189.31 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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