Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/55-19.5 | 445/65-19.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 38.77 (984.8) | 42.28 (1073.8) | 3.5 (89) 9% |
| Width inches (mm) | 17.52 (445) | 17.52 (445) | 0 (0) 0% |
| Circum. inches (mm) | 121.8 (3093.84) | 132.81 (3373.44) | 11.01 (279.6) 9% |
| Sidewall Height inches (mm) | 9.64 (244.75) | 11.39 (289.25) | 1.75 (44.5) 18.2% |
| Revolutions per mile (km) | 520.18 (323.22) | 477.06 (296.43) | -43.11 (-26.79) -8.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.81 mph (35.1 km/h) |
| 25 mph (40.23 km/h) | 27.26 mph (43.87 km/h) |
| 30 mph (48.28 km/h) | 32.71 mph (52.64 km/h) |
| 35 mph (56.33 km/h) | 38.16 mph (61.42 km/h) |
| 40 mph (64.37 km/h) | 43.61 mph (70.19 km/h) |
| 45 mph (72.42 km/h) | 49.07 mph (78.97 km/h) |
| 50 mph (80.47 km/h) | 54.52 mph (87.74 km/h) |
| 55 mph (88.51 km/h) | 59.97 mph (96.51 km/h) |
| 60 mph (96.56 km/h) | 65.42 mph (105.29 km/h) |
| 65 mph (104.61 km/h) | 70.87 mph (114.06 km/h) |
| 70 mph (112.65 km/h) | 76.33 mph (122.84 km/h) |
| 75 mph (120.7 km/h) | 81.78 mph (131.61 km/h) |
| 80 mph (128.75 km/h) | 87.23 mph (140.38 km/h) |
| 85 mph (136.79 km/h) | 92.68 mph (149.16 km/h) |
| 90 mph (144.84 km/h) | 98.13 mph (157.93 km/h) |
| 95 mph (152.89 km/h) | 103.59 mph (166.71 km/h) |
| 100 mph (160.93 km/h) | 109.04 mph (175.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1214 | 1410 | 1519 | 1586 | 1658 | 1710 | 1767 | 1834 | 1927 | 2020 | 2123 | 2206 | 2356 | 2521 | 2650 | 2733 | 2779 | 2950 | 3187 | 3704 |
Better Fuel Economy Factory Ratios Increased Power
