Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 365/80-20 | 385/65-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.99 (1092) | 42.2 (1072) | -0.79 (-20) -1.8% |
| Width inches (mm) | 14.37 (365) | 15.16 (385) | 0.79 (20) 5.5% |
| Circum. inches (mm) | 135.06 (3430.62) | 132.59 (3367.79) | -2.47 (-62.83) -1.8% |
| Sidewall Height inches (mm) | 11.5 (292) | 9.85 (250.25) | -1.64 (-41.75) -14.3% |
| Revolutions per mile (km) | 469.11 (291.49) | 477.86 (296.93) | 8.75 (5.44) 1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.6 km/h) |
| 25 mph (40.23 km/h) | 24.54 mph (39.5 km/h) |
| 30 mph (48.28 km/h) | 29.45 mph (47.4 km/h) |
| 35 mph (56.33 km/h) | 34.36 mph (55.3 km/h) |
| 40 mph (64.37 km/h) | 39.27 mph (63.19 km/h) |
| 45 mph (72.42 km/h) | 44.18 mph (71.09 km/h) |
| 50 mph (80.47 km/h) | 49.08 mph (78.99 km/h) |
| 55 mph (88.51 km/h) | 53.99 mph (86.89 km/h) |
| 60 mph (96.56 km/h) | 58.9 mph (94.79 km/h) |
| 65 mph (104.61 km/h) | 63.81 mph (102.69 km/h) |
| 70 mph (112.65 km/h) | 68.72 mph (110.59 km/h) |
| 75 mph (120.7 km/h) | 73.63 mph (118.49 km/h) |
| 80 mph (128.75 km/h) | 78.53 mph (126.39 km/h) |
| 85 mph (136.79 km/h) | 83.44 mph (134.29 km/h) |
| 90 mph (144.84 km/h) | 88.35 mph (142.19 km/h) |
| 95 mph (152.89 km/h) | 93.26 mph (150.09 km/h) |
| 100 mph (160.93 km/h) | 98.17 mph (157.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1216 | 1413 | 1521 | 1589 | 1661 | 1713 | 1770 | 1837 | 1930 | 2023 | 2127 | 2210 | 2360 | 2525 | 2655 | 2737 | 2784 | 2955 | 3193 | 3710 |
Better Fuel Economy Factory Ratios Increased Power
