Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/30-20 | 385/50-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 37.66 (956.5) | 12.58 (319.5) 50.2% |
| Width inches (mm) | 8.46 (215) | 15.16 (385) | 6.69 (170) 79.1% |
| Circum. inches (mm) | 78.79 (2001.19) | 118.3 (3004.93) | 39.52 (1003.74) 50.2% |
| Sidewall Height inches (mm) | 2.54 (64.5) | 7.58 (192.5) | 5.04 (128) 198.4% |
| Revolutions per mile (km) | 804.19 (499.7) | 535.57 (332.79) | -268.62 (-166.92) -33.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.03 mph (48.33 km/h) |
| 25 mph (40.23 km/h) | 37.54 mph (60.41 km/h) |
| 30 mph (48.28 km/h) | 45.05 mph (72.5 km/h) |
| 35 mph (56.33 km/h) | 52.55 mph (84.58 km/h) |
| 40 mph (64.37 km/h) | 60.06 mph (96.66 km/h) |
| 45 mph (72.42 km/h) | 67.57 mph (108.74 km/h) |
| 50 mph (80.47 km/h) | 75.08 mph (120.83 km/h) |
| 55 mph (88.51 km/h) | 82.59 mph (132.91 km/h) |
| 60 mph (96.56 km/h) | 90.09 mph (144.99 km/h) |
| 65 mph (104.61 km/h) | 97.6 mph (157.08 km/h) |
| 70 mph (112.65 km/h) | 105.11 mph (169.16 km/h) |
| 75 mph (120.7 km/h) | 112.62 mph (181.24 km/h) |
| 80 mph (128.75 km/h) | 120.13 mph (193.32 km/h) |
| 85 mph (136.79 km/h) | 127.63 mph (205.41 km/h) |
| 90 mph (144.84 km/h) | 135.14 mph (217.49 km/h) |
| 95 mph (152.89 km/h) | 142.65 mph (229.57 km/h) |
| 100 mph (160.93 km/h) | 150.16 mph (241.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1363 | 1583 | 1705 | 1780 | 1862 | 1920 | 1983 | 2059 | 2163 | 2268 | 2384 | 2476 | 2645 | 2830 | 2975 | 3068 | 3120 | 3312 | 3578 | 4158 |
Better Fuel Economy Factory Ratios Increased Power
