Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 40/12.5-20 | 445/50-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 40.03 (1016.8) | 40.02 (1016.5) | -0.01 (-0.3) -0% |
| Width inches (mm) | 12.52 (318) | 17.52 (445) | 5 (127) 39.9% |
| Circum. inches (mm) | 125.76 (3194.37) | 125.73 (3193.43) | -0.04 (-0.94) -0% |
| Sidewall Height inches (mm) | 10.02 (254.4) | 8.76 (222.5) | -1.26 (-31.9) -12.5% |
| Revolutions per mile (km) | 503.81 (313.05) | 503.95 (313.14) | 0.15 (0.09) 0% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.99 mph (32.18 km/h) |
| 25 mph (40.23 km/h) | 24.99 mph (40.22 km/h) |
| 30 mph (48.28 km/h) | 29.99 mph (48.27 km/h) |
| 35 mph (56.33 km/h) | 34.99 mph (56.31 km/h) |
| 40 mph (64.37 km/h) | 39.99 mph (64.35 km/h) |
| 45 mph (72.42 km/h) | 44.99 mph (72.4 km/h) |
| 50 mph (80.47 km/h) | 49.99 mph (80.44 km/h) |
| 55 mph (88.51 km/h) | 54.98 mph (88.49 km/h) |
| 60 mph (96.56 km/h) | 59.98 mph (96.53 km/h) |
| 65 mph (104.61 km/h) | 64.98 mph (104.58 km/h) |
| 70 mph (112.65 km/h) | 69.98 mph (112.62 km/h) |
| 75 mph (120.7 km/h) | 74.98 mph (120.67 km/h) |
| 80 mph (128.75 km/h) | 79.98 mph (128.71 km/h) |
| 85 mph (136.79 km/h) | 84.97 mph (136.75 km/h) |
| 90 mph (144.84 km/h) | 89.97 mph (144.8 km/h) |
| 95 mph (152.89 km/h) | 94.97 mph (152.84 km/h) |
| 100 mph (160.93 km/h) | 99.97 mph (160.89 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1282 | 1490 | 1604 | 1675 | 1752 | 1806 | 1866 | 1937 | 2036 | 2134 | 2243 | 2330 | 2489 | 2663 | 2800 | 2887 | 2936 | 3116 | 3367 | 3913 |
Better Fuel Economy Factory Ratios Increased Power
