Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 365/80-20 | 275/80-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.99 (1092) | 37.32 (948) | -5.67 (-144) -13.2% |
| Width inches (mm) | 14.37 (365) | 10.83 (275) | -3.54 (-90) -24.7% |
| Circum. inches (mm) | 135.06 (3430.62) | 117.25 (2978.23) | -17.81 (-452.39) -13.2% |
| Sidewall Height inches (mm) | 11.5 (292) | 8.66 (220) | -2.83 (-72) -24.7% |
| Revolutions per mile (km) | 469.11 (291.49) | 540.37 (335.77) | 71.26 (44.28) 15.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.36 mph (27.94 km/h) |
| 25 mph (40.23 km/h) | 21.7 mph (34.93 km/h) |
| 30 mph (48.28 km/h) | 26.04 mph (41.91 km/h) |
| 35 mph (56.33 km/h) | 30.38 mph (48.9 km/h) |
| 40 mph (64.37 km/h) | 34.73 mph (55.89 km/h) |
| 45 mph (72.42 km/h) | 39.07 mph (62.87 km/h) |
| 50 mph (80.47 km/h) | 43.41 mph (69.86 km/h) |
| 55 mph (88.51 km/h) | 47.75 mph (76.84 km/h) |
| 60 mph (96.56 km/h) | 52.09 mph (83.83 km/h) |
| 65 mph (104.61 km/h) | 56.43 mph (90.81 km/h) |
| 70 mph (112.65 km/h) | 60.77 mph (97.8 km/h) |
| 75 mph (120.7 km/h) | 65.11 mph (104.78 km/h) |
| 80 mph (128.75 km/h) | 69.45 mph (111.77 km/h) |
| 85 mph (136.79 km/h) | 73.79 mph (118.76 km/h) |
| 90 mph (144.84 km/h) | 78.13 mph (125.74 km/h) |
| 95 mph (152.89 km/h) | 82.47 mph (132.73 km/h) |
| 100 mph (160.93 km/h) | 86.81 mph (139.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1375 | 1597 | 1720 | 1796 | 1878 | 1937 | 2001 | 2077 | 2183 | 2288 | 2405 | 2499 | 2668 | 2856 | 3002 | 3096 | 3148 | 3341 | 3610 | 4196 |
Better Fuel Economy Factory Ratios Increased Power
