Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 365/80-20 | 360/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.99 (1092) | 39.84 (1012) | -3.15 (-80) -7.3% |
| Width inches (mm) | 14.37 (365) | 14.17 (360) | -0.2 (-5) -1.4% |
| Circum. inches (mm) | 135.06 (3430.62) | 125.17 (3179.29) | -9.89 (-251.33) -7.3% |
| Sidewall Height inches (mm) | 11.5 (292) | 9.92 (252) | -1.57 (-40) -13.7% |
| Revolutions per mile (km) | 469.11 (291.49) | 506.2 (314.53) | 37.08 (23.04) 7.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.53 mph (29.83 km/h) |
| 25 mph (40.23 km/h) | 23.17 mph (37.29 km/h) |
| 30 mph (48.28 km/h) | 27.8 mph (44.74 km/h) |
| 35 mph (56.33 km/h) | 32.44 mph (52.2 km/h) |
| 40 mph (64.37 km/h) | 37.07 mph (59.66 km/h) |
| 45 mph (72.42 km/h) | 41.7 mph (67.12 km/h) |
| 50 mph (80.47 km/h) | 46.34 mph (74.57 km/h) |
| 55 mph (88.51 km/h) | 50.97 mph (82.03 km/h) |
| 60 mph (96.56 km/h) | 55.6 mph (89.49 km/h) |
| 65 mph (104.61 km/h) | 60.24 mph (96.94 km/h) |
| 70 mph (112.65 km/h) | 64.87 mph (104.4 km/h) |
| 75 mph (120.7 km/h) | 69.51 mph (111.86 km/h) |
| 80 mph (128.75 km/h) | 74.14 mph (119.32 km/h) |
| 85 mph (136.79 km/h) | 78.77 mph (126.77 km/h) |
| 90 mph (144.84 km/h) | 83.41 mph (134.23 km/h) |
| 95 mph (152.89 km/h) | 88.04 mph (141.69 km/h) |
| 100 mph (160.93 km/h) | 92.67 mph (149.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1288 | 1496 | 1612 | 1683 | 1760 | 1814 | 1875 | 1946 | 2045 | 2143 | 2253 | 2341 | 2500 | 2675 | 2812 | 2900 | 2949 | 3130 | 3382 | 3930 |
Better Fuel Economy Factory Ratios Increased Power
