Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/55-19.5 | 305/60-19.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 38.77 (984.8) | 33.91 (861.3) | -4.86 (-123.5) -12.5% |
| Width inches (mm) | 17.52 (445) | 12.01 (305) | -5.51 (-140) -31.5% |
| Circum. inches (mm) | 121.8 (3093.84) | 106.53 (2705.85) | -15.28 (-387.99) -12.5% |
| Sidewall Height inches (mm) | 9.64 (244.75) | 7.2 (183) | -2.43 (-61.75) -25.2% |
| Revolutions per mile (km) | 520.18 (323.22) | 594.76 (369.57) | 74.59 (46.35) 14.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.49 mph (28.15 km/h) |
| 25 mph (40.23 km/h) | 21.86 mph (35.19 km/h) |
| 30 mph (48.28 km/h) | 26.24 mph (42.23 km/h) |
| 35 mph (56.33 km/h) | 30.61 mph (49.26 km/h) |
| 40 mph (64.37 km/h) | 34.98 mph (56.3 km/h) |
| 45 mph (72.42 km/h) | 39.36 mph (63.34 km/h) |
| 50 mph (80.47 km/h) | 43.73 mph (70.38 km/h) |
| 55 mph (88.51 km/h) | 48.1 mph (77.41 km/h) |
| 60 mph (96.56 km/h) | 52.48 mph (84.45 km/h) |
| 65 mph (104.61 km/h) | 56.85 mph (91.49 km/h) |
| 70 mph (112.65 km/h) | 61.22 mph (98.53 km/h) |
| 75 mph (120.7 km/h) | 65.59 mph (105.56 km/h) |
| 80 mph (128.75 km/h) | 69.97 mph (112.6 km/h) |
| 85 mph (136.79 km/h) | 74.34 mph (119.64 km/h) |
| 90 mph (144.84 km/h) | 78.71 mph (126.68 km/h) |
| 95 mph (152.89 km/h) | 83.09 mph (133.71 km/h) |
| 100 mph (160.93 km/h) | 87.46 mph (140.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1514 | 1758 | 1894 | 1977 | 2067 | 2132 | 2203 | 2286 | 2402 | 2518 | 2647 | 2750 | 2937 | 3143 | 3304 | 3407 | 3465 | 3678 | 3974 | 4618 |
Better Fuel Economy Factory Ratios Increased Power
