Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 365/80-20 | 315/80-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.99 (1092) | 42.34 (1075.5) | -0.65 (-16.5) -1.5% |
| Width inches (mm) | 14.37 (365) | 12.4 (315) | -1.97 (-50) -13.7% |
| Circum. inches (mm) | 135.06 (3430.62) | 133.02 (3378.78) | -2.04 (-51.84) -1.5% |
| Sidewall Height inches (mm) | 11.5 (292) | 9.92 (252) | -1.57 (-40) -13.7% |
| Revolutions per mile (km) | 469.11 (291.49) | 476.31 (295.96) | 7.2 (4.47) 1.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.7 mph (31.7 km/h) |
| 25 mph (40.23 km/h) | 24.62 mph (39.63 km/h) |
| 30 mph (48.28 km/h) | 29.55 mph (47.55 km/h) |
| 35 mph (56.33 km/h) | 34.47 mph (55.48 km/h) |
| 40 mph (64.37 km/h) | 39.4 mph (63.4 km/h) |
| 45 mph (72.42 km/h) | 44.32 mph (71.33 km/h) |
| 50 mph (80.47 km/h) | 49.24 mph (79.25 km/h) |
| 55 mph (88.51 km/h) | 54.17 mph (87.18 km/h) |
| 60 mph (96.56 km/h) | 59.09 mph (95.1 km/h) |
| 65 mph (104.61 km/h) | 64.02 mph (103.03 km/h) |
| 70 mph (112.65 km/h) | 68.94 mph (110.95 km/h) |
| 75 mph (120.7 km/h) | 73.87 mph (118.88 km/h) |
| 80 mph (128.75 km/h) | 78.79 mph (126.8 km/h) |
| 85 mph (136.79 km/h) | 83.72 mph (134.73 km/h) |
| 90 mph (144.84 km/h) | 88.64 mph (142.65 km/h) |
| 95 mph (152.89 km/h) | 93.56 mph (150.58 km/h) |
| 100 mph (160.93 km/h) | 98.49 mph (158.5 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1212 | 1408 | 1516 | 1583 | 1656 | 1707 | 1764 | 1831 | 1924 | 2017 | 2120 | 2202 | 2352 | 2517 | 2646 | 2729 | 2775 | 2945 | 3182 | 3698 |
Better Fuel Economy Factory Ratios Increased Power
