Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/55-19.5 | 445/40-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 38.77 (984.8) | 36.52 (927.5) | -2.26 (-57.3) -5.8% |
| Width inches (mm) | 17.52 (445) | 17.52 (445) | 0 (0) 0% |
| Circum. inches (mm) | 121.8 (3093.84) | 114.72 (2913.83) | -7.09 (-180.01) -5.8% |
| Sidewall Height inches (mm) | 9.64 (244.75) | 7.01 (178) | -2.63 (-66.75) -27.3% |
| Revolutions per mile (km) | 520.18 (323.22) | 552.31 (343.19) | 32.14 (19.97) 6.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.84 mph (30.31 km/h) |
| 25 mph (40.23 km/h) | 23.55 mph (37.89 km/h) |
| 30 mph (48.28 km/h) | 28.25 mph (45.47 km/h) |
| 35 mph (56.33 km/h) | 32.96 mph (53.05 km/h) |
| 40 mph (64.37 km/h) | 37.67 mph (60.63 km/h) |
| 45 mph (72.42 km/h) | 42.38 mph (68.21 km/h) |
| 50 mph (80.47 km/h) | 47.09 mph (75.79 km/h) |
| 55 mph (88.51 km/h) | 51.8 mph (83.36 km/h) |
| 60 mph (96.56 km/h) | 56.51 mph (90.94 km/h) |
| 65 mph (104.61 km/h) | 61.22 mph (98.52 km/h) |
| 70 mph (112.65 km/h) | 65.93 mph (106.1 km/h) |
| 75 mph (120.7 km/h) | 70.64 mph (113.68 km/h) |
| 80 mph (128.75 km/h) | 75.35 mph (121.26 km/h) |
| 85 mph (136.79 km/h) | 80.05 mph (128.84 km/h) |
| 90 mph (144.84 km/h) | 84.76 mph (136.41 km/h) |
| 95 mph (152.89 km/h) | 89.47 mph (143.99 km/h) |
| 100 mph (160.93 km/h) | 94.18 mph (151.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1406 | 1633 | 1758 | 1836 | 1920 | 1980 | 2045 | 2123 | 2231 | 2339 | 2458 | 2554 | 2727 | 2919 | 3068 | 3164 | 3218 | 3415 | 3690 | 4288 |
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