Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/65-22.5 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 45.28 (1150) | 30.98 (786.84) | -14.3 (-363.16) -31.6% |
| Width inches (mm) | 17.52 (445) | 10.51 (267) | -7.01 (-178) -40% |
| Circum. inches (mm) | 142.24 (3612.83) | 97.32 (2471.93) | -44.92 (-1140.9) -31.6% |
| Sidewall Height inches (mm) | 11.39 (289.25) | 7.99 (202.92) | -3.4 (-86.33) -29.8% |
| Revolutions per mile (km) | 445.45 (276.79) | 651.05 (404.54) | 205.6 (127.75) 46.2% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 13.68 mph (22.02 km/h) |
| 25 mph (40.23 km/h) | 17.11 mph (27.53 km/h) |
| 30 mph (48.28 km/h) | 20.53 mph (33.03 km/h) |
| 35 mph (56.33 km/h) | 23.95 mph (38.54 km/h) |
| 40 mph (64.37 km/h) | 27.37 mph (44.05 km/h) |
| 45 mph (72.42 km/h) | 30.79 mph (49.55 km/h) |
| 50 mph (80.47 km/h) | 34.21 mph (55.06 km/h) |
| 55 mph (88.51 km/h) | 37.63 mph (60.56 km/h) |
| 60 mph (96.56 km/h) | 41.05 mph (66.07 km/h) |
| 65 mph (104.61 km/h) | 44.47 mph (71.57 km/h) |
| 70 mph (112.65 km/h) | 47.89 mph (77.08 km/h) |
| 75 mph (120.7 km/h) | 51.32 mph (82.58 km/h) |
| 80 mph (128.75 km/h) | 54.74 mph (88.09 km/h) |
| 85 mph (136.79 km/h) | 58.16 mph (93.6 km/h) |
| 90 mph (144.84 km/h) | 61.58 mph (99.1 km/h) |
| 95 mph (152.89 km/h) | 65 mph (104.61 km/h) |
| 100 mph (160.93 km/h) | 68.42 mph (110.11 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
