Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 365/80-20 | 445/65-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.99 (1092) | 45.28 (1150) | 2.28 (58) 5.3% |
| Width inches (mm) | 14.37 (365) | 17.52 (445) | 3.15 (80) 21.9% |
| Circum. inches (mm) | 135.06 (3430.62) | 142.24 (3612.83) | 7.17 (182.21) 5.3% |
| Sidewall Height inches (mm) | 11.5 (292) | 11.39 (289.25) | -0.11 (-2.75) -0.9% |
| Revolutions per mile (km) | 469.11 (291.49) | 445.45 (276.79) | -23.66 (-14.7) -5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.06 mph (33.9 km/h) |
| 25 mph (40.23 km/h) | 26.33 mph (42.37 km/h) |
| 30 mph (48.28 km/h) | 31.59 mph (50.84 km/h) |
| 35 mph (56.33 km/h) | 36.86 mph (59.32 km/h) |
| 40 mph (64.37 km/h) | 42.12 mph (67.79 km/h) |
| 45 mph (72.42 km/h) | 47.39 mph (76.27 km/h) |
| 50 mph (80.47 km/h) | 52.66 mph (84.74 km/h) |
| 55 mph (88.51 km/h) | 57.92 mph (93.22 km/h) |
| 60 mph (96.56 km/h) | 63.19 mph (101.69 km/h) |
| 65 mph (104.61 km/h) | 68.45 mph (110.16 km/h) |
| 70 mph (112.65 km/h) | 73.72 mph (118.64 km/h) |
| 75 mph (120.7 km/h) | 78.98 mph (127.11 km/h) |
| 80 mph (128.75 km/h) | 84.25 mph (135.59 km/h) |
| 85 mph (136.79 km/h) | 89.51 mph (144.06 km/h) |
| 90 mph (144.84 km/h) | 94.78 mph (152.53 km/h) |
| 95 mph (152.89 km/h) | 100.05 mph (161.01 km/h) |
| 100 mph (160.93 km/h) | 105.31 mph (169.48 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
