Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/75-16 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.83 (833.9) | 30.98 (786.84) | -1.85 (-47.06) -5.6% |
| Width inches (mm) | 11.22 (285) | 10.51 (267) | -0.71 (-18) -6.3% |
| Circum. inches (mm) | 103.14 (2619.77) | 97.32 (2471.93) | -5.82 (-147.84) -5.6% |
| Sidewall Height inches (mm) | 8.42 (213.75) | 7.99 (202.92) | -0.43 (-10.83) -5.1% |
| Revolutions per mile (km) | 614.31 (381.71) | 651.05 (404.54) | 36.74 (22.83) 6% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.87 mph (30.37 km/h) |
| 25 mph (40.23 km/h) | 23.59 mph (37.96 km/h) |
| 30 mph (48.28 km/h) | 28.31 mph (45.56 km/h) |
| 35 mph (56.33 km/h) | 33.02 mph (53.15 km/h) |
| 40 mph (64.37 km/h) | 37.74 mph (60.74 km/h) |
| 45 mph (72.42 km/h) | 42.46 mph (68.33 km/h) |
| 50 mph (80.47 km/h) | 47.18 mph (75.93 km/h) |
| 55 mph (88.51 km/h) | 51.9 mph (83.52 km/h) |
| 60 mph (96.56 km/h) | 56.61 mph (91.11 km/h) |
| 65 mph (104.61 km/h) | 61.33 mph (98.7 km/h) |
| 70 mph (112.65 km/h) | 66.05 mph (106.3 km/h) |
| 75 mph (120.7 km/h) | 70.77 mph (113.89 km/h) |
| 80 mph (128.75 km/h) | 75.49 mph (121.48 km/h) |
| 85 mph (136.79 km/h) | 80.2 mph (129.07 km/h) |
| 90 mph (144.84 km/h) | 84.92 mph (136.67 km/h) |
| 95 mph (152.89 km/h) | 89.64 mph (144.26 km/h) |
| 100 mph (160.93 km/h) | 94.36 mph (151.85 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
