Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 33/10.5-15 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.08 (840.24) | 30.98 (786.84) | -2.1 (-53.4) -6.4% |
| Width inches (mm) | 10.51 (267) | 10.51 (267) | 0 (0) 0% |
| Circum. inches (mm) | 103.92 (2639.69) | 97.32 (2471.93) | -6.6 (-167.76) -6.4% |
| Sidewall Height inches (mm) | 9.04 (229.62) | 7.99 (202.92) | -1.05 (-26.7) -11.6% |
| Revolutions per mile (km) | 609.67 (378.83) | 651.05 (404.54) | 41.38 (25.71) 6.8% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.73 mph (30.14 km/h) |
| 25 mph (40.23 km/h) | 23.41 mph (37.68 km/h) |
| 30 mph (48.28 km/h) | 28.09 mph (45.21 km/h) |
| 35 mph (56.33 km/h) | 32.78 mph (52.75 km/h) |
| 40 mph (64.37 km/h) | 37.46 mph (60.28 km/h) |
| 45 mph (72.42 km/h) | 42.14 mph (67.82 km/h) |
| 50 mph (80.47 km/h) | 46.82 mph (75.35 km/h) |
| 55 mph (88.51 km/h) | 51.5 mph (82.89 km/h) |
| 60 mph (96.56 km/h) | 56.19 mph (90.42 km/h) |
| 65 mph (104.61 km/h) | 60.87 mph (97.96 km/h) |
| 70 mph (112.65 km/h) | 65.55 mph (105.49 km/h) |
| 75 mph (120.7 km/h) | 70.23 mph (113.03 km/h) |
| 80 mph (128.75 km/h) | 74.92 mph (120.57 km/h) |
| 85 mph (136.79 km/h) | 79.6 mph (128.1 km/h) |
| 90 mph (144.84 km/h) | 84.28 mph (135.64 km/h) |
| 95 mph (152.89 km/h) | 88.96 mph (143.17 km/h) |
| 100 mph (160.93 km/h) | 93.64 mph (150.71 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 |
Better Fuel Economy Factory Ratios Increased Power
