Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-20 | 445/50-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.85 (682) | 40.02 (1016.5) | 13.17 (334.5) 49% |
| Width inches (mm) | 5.71 (145) | 17.52 (445) | 11.81 (300) 206.9% |
| Circum. inches (mm) | 84.35 (2142.57) | 125.73 (3193.43) | 41.37 (1050.86) 49% |
| Sidewall Height inches (mm) | 3.43 (87) | 8.76 (222.5) | 5.33 (135.5) 155.7% |
| Revolutions per mile (km) | 751.13 (466.73) | 503.95 (313.14) | -247.17 (-153.59) -32.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 29.81 mph (47.97 km/h) |
| 25 mph (40.23 km/h) | 37.26 mph (59.97 km/h) |
| 30 mph (48.28 km/h) | 44.71 mph (71.96 km/h) |
| 35 mph (56.33 km/h) | 52.17 mph (83.95 km/h) |
| 40 mph (64.37 km/h) | 59.62 mph (95.95 km/h) |
| 45 mph (72.42 km/h) | 67.07 mph (107.94 km/h) |
| 50 mph (80.47 km/h) | 74.52 mph (119.93 km/h) |
| 55 mph (88.51 km/h) | 81.98 mph (131.93 km/h) |
| 60 mph (96.56 km/h) | 89.43 mph (143.92 km/h) |
| 65 mph (104.61 km/h) | 96.88 mph (155.91 km/h) |
| 70 mph (112.65 km/h) | 104.33 mph (167.91 km/h) |
| 75 mph (120.7 km/h) | 111.79 mph (179.9 km/h) |
| 80 mph (128.75 km/h) | 119.24 mph (191.89 km/h) |
| 85 mph (136.79 km/h) | 126.69 mph (203.89 km/h) |
| 90 mph (144.84 km/h) | 134.14 mph (215.88 km/h) |
| 95 mph (152.89 km/h) | 141.59 mph (227.87 km/h) |
| 100 mph (160.93 km/h) | 149.05 mph (239.87 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
