Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 365/80-20 | 365/85-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.99 (1092) | 44.43 (1128.5) | 1.44 (36.5) 3.3% |
| Width inches (mm) | 14.37 (365) | 14.37 (365) | 0 (0) 0% |
| Circum. inches (mm) | 135.06 (3430.62) | 139.58 (3545.29) | 4.51 (114.67) 3.3% |
| Sidewall Height inches (mm) | 11.5 (292) | 12.21 (310.25) | 0.72 (18.25) 6.3% |
| Revolutions per mile (km) | 469.11 (291.49) | 453.94 (282.06) | -15.17 (-9.43) -3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.67 mph (33.26 km/h) |
| 25 mph (40.23 km/h) | 25.84 mph (41.58 km/h) |
| 30 mph (48.28 km/h) | 31 mph (49.89 km/h) |
| 35 mph (56.33 km/h) | 36.17 mph (58.21 km/h) |
| 40 mph (64.37 km/h) | 41.34 mph (66.53 km/h) |
| 45 mph (72.42 km/h) | 46.5 mph (74.84 km/h) |
| 50 mph (80.47 km/h) | 51.67 mph (83.16 km/h) |
| 55 mph (88.51 km/h) | 56.84 mph (91.47 km/h) |
| 60 mph (96.56 km/h) | 62.01 mph (99.79 km/h) |
| 65 mph (104.61 km/h) | 67.17 mph (108.1 km/h) |
| 70 mph (112.65 km/h) | 72.34 mph (116.42 km/h) |
| 75 mph (120.7 km/h) | 77.51 mph (124.74 km/h) |
| 80 mph (128.75 km/h) | 82.67 mph (133.05 km/h) |
| 85 mph (136.79 km/h) | 87.84 mph (141.37 km/h) |
| 90 mph (144.84 km/h) | 93.01 mph (149.68 km/h) |
| 95 mph (152.89 km/h) | 98.18 mph (158 km/h) |
| 100 mph (160.93 km/h) | 103.34 mph (166.31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
