Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/80-12 | 225/75-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.91 (632.8) | 27.29 (693.1) | 2.37 (60.3) 9.5% |
| Width inches (mm) | 8.07 (205) | 8.86 (225) | 0.79 (20) 9.8% |
| Circum. inches (mm) | 78.27 (1988) | 85.73 (2177.44) | 7.46 (189.44) 9.5% |
| Sidewall Height inches (mm) | 6.46 (164) | 6.64 (168.75) | 0.19 (4.75) 2.9% |
| Revolutions per mile (km) | 809.53 (503.02) | 739.1 (459.25) | -70.43 (-43.76) -8.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.91 mph (35.25 km/h) |
| 25 mph (40.23 km/h) | 27.38 mph (44.07 km/h) |
| 30 mph (48.28 km/h) | 32.86 mph (52.88 km/h) |
| 35 mph (56.33 km/h) | 38.34 mph (61.69 km/h) |
| 40 mph (64.37 km/h) | 43.81 mph (70.51 km/h) |
| 45 mph (72.42 km/h) | 49.29 mph (79.32 km/h) |
| 50 mph (80.47 km/h) | 54.76 mph (88.14 km/h) |
| 55 mph (88.51 km/h) | 60.24 mph (96.95 km/h) |
| 60 mph (96.56 km/h) | 65.72 mph (105.76 km/h) |
| 65 mph (104.61 km/h) | 71.19 mph (114.58 km/h) |
| 70 mph (112.65 km/h) | 76.67 mph (123.39 km/h) |
| 75 mph (120.7 km/h) | 82.15 mph (132.2 km/h) |
| 80 mph (128.75 km/h) | 87.62 mph (141.02 km/h) |
| 85 mph (136.79 km/h) | 93.1 mph (149.83 km/h) |
| 90 mph (144.84 km/h) | 98.58 mph (158.64 km/h) |
| 95 mph (152.89 km/h) | 104.05 mph (167.46 km/h) |
| 100 mph (160.93 km/h) | 109.53 mph (176.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1881 | 2185 | 2353 | 2457 | 2569 | 2649 | 2737 | 2841 | 2985 | 3129 | 3290 | 3418 | 3650 | 3906 | 4106 | 4234 | 4306 | 4570 | 4938 | 5739 |
Better Fuel Economy Factory Ratios Increased Power
