Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/55-19.5 | 385/65-19.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 38.77 (984.8) | 39.2 (995.8) | 0.43 (11) 1.1% |
| Width inches (mm) | 17.52 (445) | 15.16 (385) | -2.36 (-60) -13.5% |
| Circum. inches (mm) | 121.8 (3093.84) | 123.17 (3128.4) | 1.36 (34.56) 1.1% |
| Sidewall Height inches (mm) | 9.64 (244.75) | 9.85 (250.25) | 0.22 (5.5) 2.2% |
| Revolutions per mile (km) | 520.18 (323.22) | 514.43 (319.65) | -5.75 (-3.57) -1.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.22 mph (32.55 km/h) |
| 25 mph (40.23 km/h) | 25.28 mph (40.68 km/h) |
| 30 mph (48.28 km/h) | 30.34 mph (48.82 km/h) |
| 35 mph (56.33 km/h) | 35.39 mph (56.96 km/h) |
| 40 mph (64.37 km/h) | 40.45 mph (65.09 km/h) |
| 45 mph (72.42 km/h) | 45.5 mph (73.23 km/h) |
| 50 mph (80.47 km/h) | 50.56 mph (81.37 km/h) |
| 55 mph (88.51 km/h) | 55.61 mph (89.5 km/h) |
| 60 mph (96.56 km/h) | 60.67 mph (97.64 km/h) |
| 65 mph (104.61 km/h) | 65.73 mph (105.78 km/h) |
| 70 mph (112.65 km/h) | 70.78 mph (113.91 km/h) |
| 75 mph (120.7 km/h) | 75.84 mph (122.05 km/h) |
| 80 mph (128.75 km/h) | 80.89 mph (130.19 km/h) |
| 85 mph (136.79 km/h) | 85.95 mph (138.32 km/h) |
| 90 mph (144.84 km/h) | 91.01 mph (146.46 km/h) |
| 95 mph (152.89 km/h) | 96.06 mph (154.6 km/h) |
| 100 mph (160.93 km/h) | 101.12 mph (162.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1309 | 1521 | 1638 | 1710 | 1788 | 1844 | 1905 | 1978 | 2078 | 2178 | 2290 | 2379 | 2540 | 2719 | 2858 | 2947 | 2997 | 3181 | 3437 | 3994 |
Better Fuel Economy Factory Ratios Increased Power
