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 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 37.16 (943.8) | 12.08 (306.8) 48.2% |
| Width inches (mm) | 8.46 (215) | 15.16 (385) | 6.69 (170) 79.1% |
| Circum. inches (mm) | 78.79 (2001.19) | 116.73 (2965.04) | 37.95 (963.84) 48.2% |
| 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) | 542.77 (337.26) | -261.42 (-162.44) -32.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 29.63 mph (47.69 km/h) |
| 25 mph (40.23 km/h) | 37.04 mph (59.61 km/h) |
| 30 mph (48.28 km/h) | 44.45 mph (71.53 km/h) |
| 35 mph (56.33 km/h) | 51.86 mph (83.46 km/h) |
| 40 mph (64.37 km/h) | 59.27 mph (95.38 km/h) |
| 45 mph (72.42 km/h) | 66.67 mph (107.3 km/h) |
| 50 mph (80.47 km/h) | 74.08 mph (119.22 km/h) |
| 55 mph (88.51 km/h) | 81.49 mph (131.15 km/h) |
| 60 mph (96.56 km/h) | 88.9 mph (143.07 km/h) |
| 65 mph (104.61 km/h) | 96.31 mph (154.99 km/h) |
| 70 mph (112.65 km/h) | 103.71 mph (166.91 km/h) |
| 75 mph (120.7 km/h) | 111.12 mph (178.83 km/h) |
| 80 mph (128.75 km/h) | 118.53 mph (190.76 km/h) |
| 85 mph (136.79 km/h) | 125.94 mph (202.68 km/h) |
| 90 mph (144.84 km/h) | 133.35 mph (214.6 km/h) |
| 95 mph (152.89 km/h) | 140.76 mph (226.52 km/h) |
| 100 mph (160.93 km/h) | 148.16 mph (238.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1381 | 1605 | 1728 | 1804 | 1887 | 1946 | 2010 | 2087 | 2192 | 2298 | 2416 | 2510 | 2680 | 2868 | 3015 | 3109 | 3162 | 3356 | 3627 | 4214 |
Better Fuel Economy Factory Ratios Increased Power
