Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 365/80-20 | 275/85-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.99 (1092) | 38.41 (975.5) | -4.59 (-116.5) -10.7% |
| Width inches (mm) | 14.37 (365) | 10.83 (275) | -3.54 (-90) -24.7% |
| Circum. inches (mm) | 135.06 (3430.62) | 120.65 (3064.62) | -14.41 (-366) -10.7% |
| Sidewall Height inches (mm) | 11.5 (292) | 9.2 (233.75) | -2.29 (-58.25) -19.9% |
| Revolutions per mile (km) | 469.11 (291.49) | 525.14 (326.3) | 56.02 (34.81) 11.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.87 mph (28.75 km/h) |
| 25 mph (40.23 km/h) | 22.33 mph (35.94 km/h) |
| 30 mph (48.28 km/h) | 26.8 mph (43.13 km/h) |
| 35 mph (56.33 km/h) | 31.27 mph (50.32 km/h) |
| 40 mph (64.37 km/h) | 35.73 mph (57.51 km/h) |
| 45 mph (72.42 km/h) | 40.2 mph (64.69 km/h) |
| 50 mph (80.47 km/h) | 44.67 mph (71.88 km/h) |
| 55 mph (88.51 km/h) | 49.13 mph (79.07 km/h) |
| 60 mph (96.56 km/h) | 53.6 mph (86.26 km/h) |
| 65 mph (104.61 km/h) | 58.07 mph (93.45 km/h) |
| 70 mph (112.65 km/h) | 62.53 mph (100.64 km/h) |
| 75 mph (120.7 km/h) | 67 mph (107.82 km/h) |
| 80 mph (128.75 km/h) | 71.47 mph (115.01 km/h) |
| 85 mph (136.79 km/h) | 75.93 mph (122.2 km/h) |
| 90 mph (144.84 km/h) | 80.4 mph (129.39 km/h) |
| 95 mph (152.89 km/h) | 84.86 mph (136.58 km/h) |
| 100 mph (160.93 km/h) | 89.33 mph (143.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1336 | 1552 | 1672 | 1746 | 1825 | 1882 | 1945 | 2019 | 2121 | 2223 | 2337 | 2428 | 2593 | 2775 | 2917 | 3008 | 3059 | 3247 | 3509 | 4077 |
Better Fuel Economy Factory Ratios Increased Power
